Envirograf AVG/F Acoustic & Fireproof Ventilation Grille
  • Envirograf AVG/F Acoustic & Fireproof Ventilation Grille

Envirograf AVG/F Acoustic & Fireproof Ventilation Grille

Product 133 - AVG/F/1515

Use an AVG/F Acoustic & Fireproof Ventilation Grille for sound and fire protection through partition walls.

  • Refer to sizes below
  • 2 parts supplied, for each side of an opening
  • Allows ventilation of rooms
  • Up to 60 minutes fire protection
VAT excluded

£68.68 Tax incl.


Sizes & Ordering References:

Please note: The grille protrudes by 25mm each side

Ref Hole Size (Height x Width): External Grille Size (Height x Width):
AVG/F/1515 150mm x 150mm 170mm x 170mm
AVG/F/1530 150mm x 300mm 170mm x 320mm
AVG/F/1540 150mm x 400mm 170mm x 420mm
AVG/F/2020 200mm x 200mm 220mm x 220mm
AVG/F/2030 200mm x 300mm 220mm x 320mm
AVG/F/2040 200mm x 400mm 220mm x 420mm
AVG/F/2525 250mm x 250mm 270mm x 270mm
AVG/F/3030 300mm x 300mm 320mm x 320mm
AVG/F/3535 350mm x 350mm 370mm x 370mm
AVG/F/4040 400mm x 400mm 420mm x 420mm
AVG/F/4545 450mm x 450mm 470mm x 470mm
AVG/F/5050 500mm x 500mm 520mm x 520mm

Use the Envirograf AVG/F Acoustic & Fireproof Ventilation Grille on doors and partition walls, ventilating whilst absorbing sound and providing up to 60 minutes of fire protection.

The grille consists of 2 parts for each side of an opening, with the internals coated in micro-acoustic material, with intumescent strips on the two long sides of the risk side opening to provide fire resistance properties. These strips expand when attacked by fire, expanding to seal gaps to prevent the spread of smoke and fire.

To accommodate the grille the ventilation aperture must be at least 10mm larger than the height between upper and lower opposing slot limits (the slots should be vertically opposite each other not directly opposite each other when the grilles are fitted)

Examples of use:

Office space is often divided by partition walls for privacy or to house several businesses within one building. Ventilation through ducts can be expensive to install whilst most grilles offer little sound protection.

Material specifications:

  • Zintec steel plate grilles
  • Fire rated sponge
  • Intumescent strips protecting the risk side


Ensure ventilation aperture is at least 10mm larger than the height between the upper and lower opposing slot limits. Screw grille plates in place on either side of the opening ensuring the ventilation slot is at the top on one side and the bottom on the other so that they are vertically opposite (not directly opposite each other). Note: the grille plates will protrude by 25mm on each side.

IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contacted to obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and ConditionsWe will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.

Any Envirograf products to be used in or for Harrods department store should be authorised with our Technical Team prior to purchase.

It is your responsibility to read the Product Data Sheets (available below) before you place an order and prior to application of the product. The content of this website is our best recommendation and is not advice. Coverage rates quoted are approximate, you agree that coverage depends on the condition of the substrate, surface absorption, texture and application method. We ALWAYS recommend a trial area is coated to ensure the product meets your requirements before use.

Product Details
Product 133 - AVG/F/1515

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

Be the first to ask a question about this product!

Question about the product

* Required fields
16 other products in the same category:

Envirograf Intumescent Glazing Channels

Intumescent Glazing Channels for high noise & vibration areas, absorbing sounds and movement more efficiently. Intumescent material expands in fire to seal up gaps and prevent spread of smoke and fire. Refer to sizes below Held in place with hardwood or softwood beading 10mm channel height up to 30 minutes fire rating 15mm channel...

Price £8.15
In stock

Envirograf Intumescent Putty

Water-based Intumescent Putty that is ideal for filling round metal and plastic pipes and cables for extra fire protection. Unaffected by moisture once the face has sealed. Use round glass in steel frames Over PVE/foam Buff coloured but could have slight variation in colour Stays permanently flexible internally Subjected to tests...

Price £6.10
In stock

Envirograf Welding Blankets and Pads

Welding Blankets and Pads help minimise splash damage from welding and using blow torches and lamps. Place pads behind services to protect walls, and hang blankets to protect areas from flames. Refer to size guide below Fibre-free Non-asbestos For continuous temperatures up to 600°C Withstands short-term temperatures of up to 1200°C

Price £53.02
In stock

Envirograf Firoblock Sleeve

Firoblock Sleeves for expanding and contracting pipes that run through fire-rated walls & ceilings. Also protects pipes against corrosion from contact with concrete & cement, and cables in trunking and on cable trays. Refer to sizes below Up to 4 hours fire protection Easily fitted from above & below ceilings Easy to cut No...

Price £5.84
In stock

Firetherm Intudeck

Firetherm Intudeck provides up to 90 minutes fire resistance under timber floors and is ideal for installing above ceilings that can't be disturbed, such as decorative or made from lath and plaster. 1200 x 600 x 70 mm size Contact our sales team on 0113 2455450 if custom sizes required Up to 90 minutes fire protection Simple...

Price £24.59
In stock

Firetherm Intuprofile

Firetherm Intuprofile, a dense mineral fibre for sealing trapezoidal openings in profiled steel floor decking, preventing the spread of fire for up to 2 hours. Price on Application Please contact our sales team on 0113 2455450 with either the steel decking manufacturer’s reference or the site-measured dimensions (height, width at top and...

In stock

Firetherm Intumastic

Firetherm Intumastic seals around dry internal joints, pipes and services to insulate and prevent the spread of fire and smoke for up to 240 minutes. Tack free between 15 minutes and an hour Can be over-painted once fully cured Use in movement joints - allows up to 30% movement Optifire Identification Air pressure tested up to 2000 Pa...

Price £1.61
In stock

Protecta FR Board

Protecta FR Board, designed to prevent the spread of fire & smoke through openings in fire rated walls & floors with multiple installed building services. Permanently flexible, it will maintain the acoustic design performance in fire rated walls & floors, accommodating movements during fire & smaller movements in the...

Price £20.64
In stock

Envirograf HMG Ventilation Grilles

Ventilation with fire protection, HMG Ventilation Grilles fit into metal-cased windows for ceiling ventilation, or directly into glazing. Ideal for bathrooms and kitchens, the grilles have intumescent material that expands in fire to seal the grille completely shut. Refer to sizes below Easy to fit White or brown, with more colours &...

Price £41.04
In stock

Nullifire FB810 Fire Curtain

Nullifire FB810 Fire Curtain is a lightweight, flexible fire curtain which provides a barrier to smoke and flames. It consists of a specially coated glass fabric material.This is stretched between perimeter fixings and staple jointed for maximum effectiveness. FB810 is suitable for 60-120 minutes fire resistance - See performance table for 120 minute...

Price £550.19
In stock

Envirograf Woodfiller

A water-based general purpose woodfiller that can withstand temperatures up to 1000°C. Fill cracks and penetrations in wood. Ideal for use on wood paneling in doors and walls.

Price £8.57
In stock

Envirograf Intumescent Fire Stop Blocks

Intumescent Fire Stop Blocks form a fire break in walls & floors, a barrier against fire & smoke. These foil-clad blocks are easily cut to shape around openings & fit into gaps. Use under suspended computer floors & between screen walling and concrete floors Expands at 115°C Made to standard widths and depths Up to 2...

Price £41.08
In stock

Firetherm Spanatherm

Firetherm Spanatherm, fire resistant rock fibre expansion joints for slab edging and curtain walling, preventing the spread of smoke and fire. Up to 2 hours fire integrity Vapour and smoke barrier Allows significant movement accommodation 1200 x 600 x 100mm slabs Please contact our technical team on 01132455450 for custom size...

Price £27.21
In stock

Envirograf CLVM Clipper Range for Toilet Ventilation Fire Protection

CLVM Clipper Range Toilet Ventilation Fire Protection for toilet and bathroom ventilation fan units on ceiling or walls, protecting PVC and flexible PVC pipes from fire with intumescent material inside the top and at the base, fixing into place. Up to 90 minutes fire protection Slides over PVC pipes Simple to fit Refer to sizes below

Price £21.80
In stock

Firetherm Soffit Liner Rock

Use Firetherm Soffit Liner Rock as an aesthetically pleasing liner to concrete soffits; the high-density mineral fibre slabs perform exceptionally well thermally and acoustically and, above all, provide a fire safe solution to building requirements. Price on application Please contact our sales team on 0113 2455450 to place an order....

In stock