Gilberts door transfer grilles. Supplied in two pieces it lends itself to easy installation in a standard 44mm thick fire door, + when finished with a colour co-ordinated edge flange, results in an attractive but efficient air transfer feature. Gilberts door transfer grilles

 
 Supplied in two pieces it lends itself to easy installation in a standard 44mm thick fire door, + when finished with a colour co-ordinated edge flange, results in an attractive but efficient air transfer featureGilberts door transfer grilles Door Transfer Grilles

We take great pride in offering an exceptionally high level of customer service and in building long-term relationships with our clients, whether they be consultants. These fire resistant air transfer grilles are developed to allow the free circulation of air at room temperature through construction elements (walls, doors etc. Skip to content The IFD-D intumescent door grille kit is suitable for new or existing Proprietary fire resistant doorsets that may require air transfer or pressure relief. If at hallways, then, they are a code violation nowadays, as door grilles are not fire rated, there may some rated doors with grilles, but it is your case? 2. 001. Optional equipment and. uk. Aluminum Transfer Grille (ATG) Overview. ) Ak Factor Core Velocity Velocity Pressure Neg. Est. REQUEST A QUOTE . g. Catalogue DIFFUSER. F. The Perfect Balance In-Door Return Air Pathway is a Durable ABS plastic grille with a noise and light dampening baffle that is installed into the bottom of interior doors. see a portion of in picture posted. AG60 Bar Grille. Used to allow for air movement between two conditioned spaces while preventing vision. 012. Learn More > Hushon UK Ltd. The LVH44 dampers can be assembled in multi-modules to protect large. HVAC OV 17. by. The 9700 provides a single side mounting frame for use where appearance is an issue on only one side, as in a utility or storage closet. ls in m = Throw distance to a bmaximum time averaged air vel ocity of 0. - Wide 33mm Flange Border. We can accommodate bespoke sizes or larger quantities – please get in touch with our team on 02920 857. 0 ( 0) From £45. 2. Easy to assemble. Every intumescent grille contains a moisture-resistant intumescent core held in a galvanised steel frame for security and long-lasting use. One grille is located high on the wall on. AG50 Bar Grille. A collection of intumescent air transfer grilles offering protection against fire. Yes, you should absolutely install a dedicated grille. The grille vanes are individually adjustable to allow jet spread or deflection to be set within 45 of the duct axis. (Matt black inish). Minimum size is 6" x 4" (152 x 102). Intumescent air transfer grilles allow movement of air when fitted into doors, walls and ductwork in a building. 008. 3. These grilles are compatible with doors or partitions as thin as 1 3/8 in. Their special features make them ideal for placing in doorways and interior walls. The Perfect Balance is typically installed in a bathroom or mechanical room door for the purpose of providing make up air for the exhaust fan. A door undercut is a space between the door and the floor below it that’s large enough to allow air transfer between rooms. H Nominal grille heigh t. Click here to download. Both the Halton TVC grille and opposite frame are screwed to the wall or door. Blades are chevron in configreation and are mounted in a fixed position ina rigid PVC track in an integral part of the frame. London’s Decorative Metalwork and Metal Grille Specialist. Now I am down to the transfer grille or the jumper duct. door transfer grille. Speci˚ed Door Opening Speci˚ed Door Opening - 1/8 1 5 16 2 13 32 Model : XG-DGCO ( Door / Transfer Grille - Core Only ) Model : XG-DGSF ( Door / Transfer Grille - Single Flange Frame ) Model : XG-DGDF ( Door / Transfer Grille - Double Flange Frame ) Model : XG-DGLP ( Door / Transfer Grille - Light Resistant ) Face View ( Models: XG-DGDF &Lorient has been developing high quality intumescent air transfer grilles for over 40 years; combining air movement with fire protection & making buildings s. In line with the smaller Louvres this series offers a high resistance to weather ingress combined with a good 50% free and both flanged and recessed channel frame options can be selected along with standard bird guard and insect screen accessories. Grilles; Registers; Diffusers; Air Distribution; Fire Dampers; Access Doors; Air and Sound Controls; Louvers and Dampers. Intumescent air transfer grilles to satisfy air transfer application in doors or walls. or check out our Support Center. Recommended price. Lorient cover grilles offer flexibility when considering aesthetics. jpg. The DGA4 vents in the toilets feature a louvred face for a horizontal air pattern. (Matt black finish). . Over the last 135 years we've produced architectural quality metal works for some of the biggest brands on the planet, yet we don't forget our. A range of grille sizes can be produced from two modules of size 150mm by 150mm and 225mm by 112mm each 40mm thick. This may cause the damper to scream. Transfer grilles shall use 50 square inches (of grille area) to 100. with a door sleeve and electrical door wiring loop for a 45mm or 54mm door or a wall sleeve only, for a wall/partition. Available in a standard grid size of 1/2" x 1/2" x 1/2" with 1/2" x 1/2" x 1" or 1" x 1" x 1" grids optional. ) Ak Factor Core Velocity Velocity Pressure Neg. 002 0. Supplied in two pieces it lends itself to easy installation in a standard 54mm thick fire door, + when finished with a colour co-ordinated edge flange, results in an attractive but efficient air transfer feature. Showing 11 of 122 products. Apply a bead of Pyroplex Intumescent Acrylic Sealant centrally and spread the acrylic across the full width of Timber liner, to achieve a thickness of 0. Door Transfer Grille Ordering Specification Sizing Finish Introduction Gilberts AV1601 Series presents an attractive alternative to traditional vision proof door mounting air transfer grilles. GRILLES AND REGISTERS F DOOR/TRANSFER GRILLES PERFORMANCE DATA: DOOR/TRANSFER GRILLES – 5100 AND 6100 SERIES MODELS: 51DG, 61DG Listed Duct Size (inches) Alternate Sizes (inches) Core Area (sq. Non-vision door transfer grilles are two piece grilles designed to be installed in doors or partitions. 012 200. See the crime statistics in your area here. The ATG/BF comes complete with mounting flange plus a loose telescopic rear flange to suit a minimum thickness of 42mm up to a maximum thickness of 110mm door or partition. Original plan was to take my central air return in the hallway and stub ducts in the attic to get individual air returns to each bedroom. <br><br>The Perfect Balance In-Door Return Air Pathway is designed to maintain adequate air flow between rooms and eliminate pressure imbalancesallowing each room. Transfer Grilles offer the largest free area possible with the option of a sight-proof or light-proof core. NV6 is a Vision proof flanged grille suitable for surface mounting onto doors, wall or partitions. 6145H - Steel • 45° Deflection. Series XG-DG extruded aluminum door grilles are designed to transfer air through doors or walls. Our combined intumescent fire & smoke air transfer grilles can be used in applications where cold smoke containment is required. NV1 Grille. centrally located return air of which you can. Jet diffusers. GRILLES AND REGISTERS F DOOR/TRANSFER GRILLES PERFORMANCE DATA: DOOR/TRANSFER GRILLES – 5100 AND 6100 SERIES MODELS: 51DG, 61DG Listed Duct Size (inches) Alternate Sizes (inches) Core Area (sq. Wrapping up smoke and fire protection with our range of Fire Dampers, Smoke Dampers, Smoke/ Fire Dampers, Intumescent Air Transfer Grilles and Air Volume Control Dampers all. “While undercutting doors can create part of the return air path, wall transfer grilles or jump ducts should be installed to prevent the return problems,” the Building Science Corporation warns. James Gilbert & Son specialises in high quality decorative metalwork. Submit a request online and get a quote from your local representative within 4 hours. Reliable. London’s Decorative Metalwork and Metal Grille Specialist. AGS-T read more. View an intumescent ATG fire test here. Series GECA-RC Removable Core Eggcrate Grilles. View Products. ” In light of this, what exactly are transfer grilles? Typically, a transfer grille or register is inserted in the wall or above a door to link a closed room with an open area such as a corridor or living room, so giving a second. 005 150. Air transfer grilles for fire doors. Steel Maximum Security Grille with Square Perforations. These are specially designed which also giving a pleasing appearance to suit architectural needs. Home; Fan Finder;Non-vision air transfer grilles, made of aluminium, with fixed horizontal blades. We are a manufacturer of Grilles, Diffusers and Louvres with a special emphasis in the fabrication and technical knowledge of Swirl Diffusers. Want free delivery? Add £200 more. Adjustable from 1-3/8" to 2 1/4" door thickness. Series GAwith a door sleeve and electrical door wiring loop for a 45mm or 54mm door or a wall sleeve only, for a wall/partition. Genuine Comfort find that air return grilles tend to be the better choice between transfer grilles and air return grilles. Any guidance the committee could provide in this area would be most helpful. Is it ever OK to install a transfer grille? Sure. - Attractive Slimline Appearance. Login / Register; 0117 9372846;. 4 out of 5. Air Transfer Grille Introduction Gilberts FB700 Series presents a range of Mild Steel Louvred Grilles designed to satisfy all types of air transfer application in offices, shops, schools, hospitals and many other commercial projects. This air transfer grille cover is suitable for both standard air transfer and fire rated applications. £7. 3. 001 0. The negative pressure on that duct of your HVAC system will mess with the air distribution in weird (bad) ways, and it's almost certainly not big enough for what the dryer will be trying to pull. 5 40mm 8mm Overall Size = List or Height + 57mm Overall Sizes = List + 67mm (+0/-1) 25mm Pitch 12. 4. These grilles also have a 6mm vermin proof mesh fitted to both faces, so unwelcome. Such spaces include storage rooms and restrooms. Narrow 40mm and 44mm Thickness. Series GP Security Grilles. See the top reviewed local door contractors & installers in Victoria, BC. PD – AGS – 1. In many cases, pipes and ducts. 008 0. For the size of the installation hole, see Dimensions (L-10)x (H-10). 2. NV3 is a Vision proof core in 32mm flanged border with matching telescopic back flange. If one grille is to be used per door then the volumetric flow needed will be: 1152/2 = 576 cubic metres per hour. Typical Building Sector : Commercial,Dom. Designed for door transfer in dark room/light proof applications. ) 0. PERFORMANCE DATA STG Core Area (sq. 2 Slimline Wall Grille ASG 11 1. HVC Supplies offer one of the widest ranges of grilles, diffusers, louvre systems, volume control dampers and fire dampers available from any UK manufacturer, with our range being constantly expanded to suit new industry requirements and customer demands. • Height in 85 mm steps (blade pitch) • Door thickness: from 37. Mm Craft Mill Finish Designer Ss Door Grill, For Home ₹ 1,050/ Square Feet. 001. 3 (7) Download. It adjusts to suit a door thickness from 1-3/8" to 1-7/8". 001. Transfer grilles, door undercuts and wall grilles are all acceptable means to allow air to flow around the house. Door / Transfer Grilles Products Matching Your Selection METALAIRE is the flagship brand of Metal Industries Inc. Door / Transfer Grilles Products Matching Your Selection METALAIRE is the flagship brand of Metal Industries Inc. 2. 02576. GRILLES AND REGISTERS F DOOR/TRANSFER GRILLES PERFORMANCE DATA: DOOR/TRANSFER GRILLES – 5100 AND 6100 SERIES MODELS: 51DG, 61DG Listed Duct Size (inches) Alternate Sizes (inches) Core Area (sq. This grille features a 3/64” thick perforated face with 1/8” holes on staggered centers. The LVN20S provides a unique solution to the problem of containing both fire + smoke in emergency conditions yet offering good air transfer through doors in everyday use. A fire-rated version is also available. Browse a range of intumescent vents also known as air transfer grilles and fire vents. X. High – low transfer grilles. Transfer grilles shall use 50 square inches (. If transfer grilles or jump ducts are used, refer to the balancing report provided by the HVAC contractor for the bedroom air flows to size the grilles or ducts. 033 300. 02576. e. A door or partition non-vision grille incorporating inverted chevron blade…. Fire resistant doors, fire resistant walls, fire resistant partitions. Such spaces include storage rooms and restrooms. With minimum and maximum security options as well as a variety of mounting types, these grilles are suitable for supply and return applications. DG-3 - Double Flange Door/Transfer Grille. or walls. Over the last 135 years we've produced architectural quality metal works for some of the biggest brands on the planet, yet we don't forget our. Allowing air movement through a door or wall without compromising fire integrity. TRH (Transfer grilles) 1. 9% and improve hygiene. Nailor 51DG and 61DG Series Door Grilles are designed to be. 5. acoustic transfer grill 468AK/2. Conditioned air supply sized to deliver at a rate equal to 1 cubic foot per minute (0. 2. IMG_0186. NV3 Grille. 9 Slimline Weather Louvre AWLS 37 1. Intumescent air transfer grilles serve the same purpose but also expand when exposed to heat from a fire, sealing the gap in a fire door or wall – meaning the fire rating of the compartment is maintained. The Perfect Balance In-Door Return Air Pathway is a Durable ABS plastic grille with a noise and light dampening baffle that is installed into the bottom of interior doors. £7. It adjusts to suit a door thickness from 1-3/8" to 1-7/8". Download catalogue. Check out my articles linked. com 0344 856 0594. DG-3 - Double Flange Door/Transfer Grille. Program. 9700 9700 - Stainless Steel Door. 1H 1V 2H 2V OBSS ED DT-2M. CT-700L. This is partly due to a privacy issue. w. 012. ft. ) Ak Factor Core Velocity Velocity Pressure Neg. robustly fabricated from 20swg mild steel and comprises of<br />. Working from. duct or transfer grille), and perimeter walls insulated in accordance with Section N1102. Downloads. James Gilbert & Son specialises in high quality decorative metalwork. 021 250. Submit a request online and get a quote from your local representative within 4 hours. BBB Start with Trust ®. Model DG-FC Louvre Grilles are available in stock sizes and can. A definitive guide to operating theatre diffuser selection in accordance with HTM-03-01. Lorient Code of Conduct. Product 36 New Style Intumescent Block Grille. Static Pressure 100. We are always on hand to help advise on suitability. Floor diffusers. Single Core with Flat Frame. Acoustic, smoke + fire containment systems. 005 150. The Perfect Balance is a transfer grill designed to fit in the door. Vision proof. Without make up air, the vent fan, bathroom fan or exhaust fan cannot do its job: removing moisture and odors or offering relief. In the event of an alarm condition, or power failure, the smoke shutters shut, preventing the passage of cold smoke. 7" x 3. Introduction Gilberts NV Series provides a comprehensive and traditional range of vision proof grilles to suit all manner and type of air transfer application through doors, walls. GRILLES AND REGISTERS F DOOR/TRANSFER GRILLES PERFORMANCE DATA: DOOR/TRANSFER GRILLES – 5100 AND 6100 SERIES MODELS: 51DG, 61DG Listed Duct Size (inches) Alternate Sizes (inches) Core Area (sq. 359. Send us a messageFire and Smoke Resistant Dampers / Air Transfer Grilles System Benefits 3 Product Range 4 - 5 Operation 6 Lorient Smoke Control Systems 6 - 8 Product Solutions 9 - 18 - Doors 13 - 14. PAGE 145888-757-4774. New Build Residential sales:. Bright White or Satin Anodized finish. It's annoying that you can hear everything that goes on in the house due to the transfer grilles above the door. To provide a pathway for air from rooms with closed doors to these central return registers, builders can use door undercuts or install transfer grilles or jump ducts. Door Furniture; Drawers and Drawer Runners; Eyes; Feet; Fixings Fasteners; Formed Section; Gastronorm Containers; Gates; Glass Canopy; Handles. The grill will be larger than you think, at least 18" square. Also, there is NO indication of the how to determine the required size of the permanent openings of any type. door aluminium. 012 200. docx] Performance Data. TAMARACK R. Height : 1005 mm. 001. For installation information not covered in this sheet, refer-ence appropriate damper basic installation instructions. Smoke, Fire and Volume Control. DL. Habitable rooms only shall be required to meet these requirements forEngera Bathroom Door Air Vent Grille Two Sided Ventilation Cover for Restroom, Warehouse, Storage Doors | Interior Door Transfer Grill 453mm x 91mm (18. Heavy Duty Single & Double Deflection Grilles. Door Transfer Grille Ordering Specification Sizing Finish Introduction Gilberts AV1601 Series presents an attractive alternative to traditional vision proof door mounting air transfer grilles. Series FB Air Transfer Grille. 98 -9%. NV1 is the Vision proof core only. Type NV6 Vision proof langed grille suitable for surface mounting onto doors, wall or. We supply a range of Stainless Steel ventilation grilles, trickle vents, hit and miss vents. Single Core with Flat Frame. Gilberts (Blackpool) limited is one of the largest UK manufacturers of Grilles, Diffusers, Louvres, Smoke/Fire Dampers and Natural Ventilation Systems for the Heating, Ventilating and Air Conditioning industry. g. V-shaped Deflection Vanes Set on 1/2” Centers. ft. Exterior Stainless Steel Safety Door Grill, For Home ₹ 900/ Square Feet. recent projects include: Harrow Crown Courts Walton Prison (Segregation. Static Pressure 100. Engera Bathroom Door Air Vent Grille Two Sided Ventilation Cover for Restroom, Warehouse, Storage Doors | Interior Door Transfer Grill 453mm x 91mm (18. Standard finish is natural anodised while other finishes including powder coat are available to suit the interior and architectural design requirements. Air Velocity : 75 m/s. Supply and extract grilles for all building types including double and single deflection grilles, egg crate cores, security grilles and data centre floor grilles. The Perfect Balance In-Door Return Air Pathway is a Durable ABS plastic grille with a noise and light dampening baffle that is installed into the bottom of interior doors. But wherever air moves, fire and smoke can travel too. Series AV Door Transfer Grille. Introduction Gilberts AV1601 Series presents an attractive alternative to traditional vision proof door mounting air transfer grilles. Welcome to dba Air Solutions Ltd. 51EC - Aluminum • Eggcrate • Core Only. Discover our wide range of products within the Door grilles category and benefit from 20+ years of expertise Personal advice Competitive prices. Discreet, but attractive, this robust extruded aluminium grille incorporates a slotted, linear airway across its length and locates at the bottom of the door. Still family owned Gilberts operates from its 120,000 sq ft manufacturing base in Blackpool, Lancashire with an annual turnover in excess of £20 million. Both the Halton TVC grille and opposite frame are screwed to the wall or door. WFV, WFVG, WFG Fire-rated Air Transfer Grilles. , offering a complete line of air distribution and air terminal products. 010Security Grilles Direct have fitted window protection for commercial sectors such as retail organisations, IT companies and schools, providing effective deterrents against potential intruders. 1 Find Your Rep. December 19, 2020 ·. The supply vents, which push air through the duct work, must be placed properly. ) Nominal Size Core Velocity (fpm) 100 150 200 250 300 350 400 Velocity Pressure (in. CERTIFICATIONS. Lorient Intumescent Air Transfer Grilles are used to provide an answer to situations where ventilation is required in fire compartment walls or doors. The air transfer grilles are connected, via a control panel, to a standard fire alarm system. Grille flange features a return edge to provide clearance on the plenum lip. If the doors are going to be closed, then returns are needed. EI rating of 120 minutes when used. Introduction Gilberts FB Series provides a compact, efficient range of intumescent fire dampers designed to satisfy all types of air transfer application in offices, shops, schools, hospitals and many other commercial projects. 7m/s Volume flow rates apply to a nominal grille length [L] of 1000mm, maximum sound power level of the air. They can be used for providing dampers in ductwork. uk HomeDoor grilles are seldom used nowadays for two reasons 1. jpg. Gilberts Supply Diffusers have been tested within the range of +/- 10ºC (as recommended in the HEVAC Guide to Air Distribution Technology). and is greater in size than transfer. Bespoke designs, priority order and guaranteed delivery dates. Fisher & Paykel 48" Grill with Infrared Sear Burner, LP Gas - BE1-48RCI-L. Learn More >Search 109 Victoria door replacement installers to find the best door contractor or installer for your project. It adjusts to suit a door thickness from 1-3/8" to 1-7/8". We are a manufacturer of Grilles, Diffusers and Louvres with a special emphasis in the fabrication and technical knowledge of Swirl Diffusers. How tall was Gilles Gilbert? Gilles Gilbert. Allows for air transfer through doors or walls. Horizontal and vertical moving slats for an individual regulation as they adapt the air range and the air stream to the needs of the zone. DESCRIPTION: Construction: Frame and blades are 6063 extruded aluminum alloy with 200-R1 satin anodized finish. Info-604: Transfer Ducts and Grilles. - Standard or Fireblock Air Transfer Application . Protect against rising threat of burglary. Aluminum door return grille with sight-proof blades parallel to short dimension. The units, which satisfy BS 476 Part 22, incorporate intumescent elements which expand and carbonise when exposed to temperatures in excess of 150 C, thereby sealing off the ventilation opening. Servicing enquiries: servicing@vent-axia. O & MInstructions. 4. With a dedicated design team working on both new developments and. Your guide to trusted BBB Ratings, customer reviews and BBB Accredited businesses. An electromechanically operated shutter smoke mechanism closes its slats in the event of a fire alarm going off, thus stopping cold smoke and flames from passing. 004 0. Uniclass Code : Pr_70_65_04_03. The transfer grill comes in 2 halves and is flexible as it is aluminum similiar to duct work. Model Series 51DG offers the largest free area possible (average > 50%) with a completely sight-proof. Blades are chevron in configreation and are mounted in a fixed position ina rigid PVC track in an integral part of the frame. Steel Maximum Security Transfer Grille with Rounded Perforations. 1. Share. Actuator (location varies) 8. Flush mounted ,non vision door or partition grille. air transfer grilles can be used in all applications where cold smoke containment is required. PERFORMANCE DATA ATG1/ATG2 Core Area (sq. Formed in 1987, DBA Air Solutions have provided advice, support and a wide ranging source of knowledge within the HVAC industry for over 30 years. Lorient Intumescent Air Transfer Grilles are suitable for ventilation in fire compartment walls or doors. 5mm coldTransfer Grille Baffle. It adjusts to suit a door thickness from 1-3/8" to 1-7/8". Door Transfer Grilles. Download the pdf to learn. FGS - fire resistant and cold smoke control mechanical air transfer grille (type MMS) are designed and certified in accordance with EN 1364-1 and ETAG 026 part 4,View Our Presentation. Can be used to provide resistance to fire and hot smoke of up to 60 minutes in doors and walls. A typical bedroom door would be 28”-30” wide, very good chance there’s a little stud somewhat in the middle to hold up the drywall (they’re usually at every 16”). Tamarack Technologies, Inc. A fire-rated version is also available. We are the world's oldest manufacturer of decorative metal grilles. Designed for. Duct Smoke/Fire DampersCombined smoke and fire damperssuitable for use in all types of HVAC ductwork. They allow free movement of air but allow no sight of one side from the other. Working from a purpose designed production and warehousing facility in the West Midlands, we are capable of producing everything from the. Please watch our corporate video. Supply registers usually have the damper handle so you can adjust it. Gilberts NV Series provides a comprehensive and traditional range of vision proof grilles to suit all manner and type of air transfer application through doors, walls and partitions. NR Ratings and Core Areas Air Volume m3/s Face. Supplied in 2. 450x92. A transfer grille or grate is a panel or fitting with an opening allowing air or sound to move from one room to another. Item number: 35013002. Using the same intumescent louvred slat configuration as the LVN20, but incorporating an electro mechanically operated smoke shutter mechanism. We are the world's oldest manufacturer of decorative metal grilles. Additionally, fire rated air transfer grilles that have only been tested with cover grilles, must be installed with the tested cover grille design as a complete unit. Even more important is the operation of these systems, particularly mechanical and plumbing. u. Air Ventilation Grilles, Fixed Blade & Adjustable Louvres, Ventilation Diffusers, Air Supply & Air Exhaust Valves, HVAC Grilles, Air Security Grilles, VAV & CAV Units, Radiant Panels and Trench Heating supplies from the industries leading manufacturer. Minimum Unit Size is 6”x4” with a Maximum. Damper body formed in langed Z sections 52 x 35 x 196. Gilberts NV Series provides a comprehensive and traditional range of vision proof grilles to suit all manner and type of air transfer application through doors, walls and partitions. BBB Accredited Door and Gate Operating Devices near Victoria, BC. 57 (29 grilles required) 0. 20 Patterson Brook Road – Suite #7 West Wareham, MA. 001. Door, Wall & Partition. ArchiExpo offers ventilation grates and. Delivery is typically 5-7 working days but make take as long as 15 working days depending on the manufacturer's workload. Using the same intumescent louvred slat. Paul_Ott 2 yr. View Products. Coat Hook Remove all hooks behind doors, in wardrobes, etc. Gilberts NV Series provides a comprehensive and traditional range of vision proof grilles to suit all manner and type of air transfer application through doors, walls. From standard grilles and registers, to its architectural line of Formations® linear slot diffusers, along with a newly released series of displacement. 6") HVAC OV 17. Gilberts NV Series provides a comprehensive and traditional range of vision proof grilles to suit all manner and type of air transfer application through doors, walls and partitions. Series NV Vision Proof Transfer Grilles.