Rytons A1® Fire-rated Ducting Kits 110mm x 54mm with Single Air Bricks

General Details
  • A range of custom-made metal ducting kits compatible with 110mm x 54mm rectangular HVAC supply and extract ducting.
  • Straight kits, 90° balcony kits and s-shaped window head kits provide options to accommodate a variety of ductwork locations.
  • Manufactured from A1 classified galvanised steel.
  • Three air brick styles meet different design, airflow and vent placement requirements in buildings. For cladding, flanged options cover cut edges to maintain the external appearance.
  • Air bricks maintain low resistance and have high airflows of over 90% of the free area of the duct.
  • Air bricks supplied with custom powder coating to Class A2-s1, d0. Choose from the RAL Classic colour chart in matt, semi-gloss or gloss finishes to match cladding or brickwork. Signature architectural finishes are also available.
  • Built-in weather protection. Drainage holes in the air brick provide discreet water outlets, and louvred styles feature angled grilles to promote runoff, reducing the risk of water transfer into the duct.
  • Air brick/plenum are brick size (rather than duct size) for easy installation using standard mortar joints for a neat appearance in brickwork.
  • Suitable for:
  • The external walls of high-rise ‘relevant buildings’ over 18m high (11m high in Scotland).
  • The external walls of buildings 11m high and above, undergoing unsafe cladding remediation work.
  • The external surfaces of residential purpose group buildings more than 11m high.
  • The external surfaces of residential purpose group buildings 11m high or less where an external wall is within 1m of the relevant boundary.
  • Bespoke design service available. For further information contact our Technical Sales Office on 01536 511874 or email admin@rytons.com.
  • Telescopic fitting air brick allows the overall length of the ducting kit to be extended during installation, providing flexibility to accommodate minor variations in the external façade.

  • Supplied ready to install with no on-site assembly required.
  • Duct factory fitted to the plenum adaptor.
  • No screw fixing or sealing needed, saving time and labour and ensuring correct alignment and airtight joints.
no-install-required-stamp-ORIG-220221-small

A1 Fire Classification Explained:

  • Rytons A1® Fire-rated Ducting Kits 110mm x 54mm with Single Air Bricks are made from galvanised steel.  Galvanised steel is considered fire class A1 without testing, as per European Commission paper 96/603/EC referred to in BS EN 13501-1:2018.  The material remains robust at elevated temperatures and has a high melting point temperature of 1450-1520° C.  Classification: A1.  Definition: Non-combustible.  Description: No contribution to fire.

Reference Material:

  • England & Wales: view extracts >>
  • Approved Document B: Fire safety (2019 edition incorporating 2020 amendments).
  • Approved Document B: Fire safety (2022 amendments) for England.
  • The Building Safety Act 2022.
  • Scotland: view extracts >>
  • Building Standards Scotland Technical Handbook – Domestic: June to November 2022 and from December 2022.
  • Northern Ireland: view extracts >>
  • Technical Booklet B (Materials and workmanship) July 2013.
  • Technical Booklet E (Fire safety) 2012.
  • Amendments Booklet – 2022 (AMD 7).

Rytons A1® Fire-rated Straight Ducting Kits 110mm x 54mm:

Rytons A1® Fire-rated Ducting Kit 110mm x 54mm with Return Grille Single Air Brick
Return Grille Single Air Brick: 7,200mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom overall length (including plastic duct connector – refer to drawing). Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6085455.
Patent Pending.
Product Code: A1DK110X54RGS.
Download Drawing.

Rytons A1® Fire-rated Ducting Kit 110mm x 54mm with Return Grille Single Air Brick Flanged
Return Grille Single Air Brick Flanged (15mm flange with corner screw holes): 7,200mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom overall length (including plastic duct connector – refer to drawing). Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6085457.
Patent Pending.
Product Code: A1DK110X54RGSF.
Download Drawing.

Rytons A1® Fire-rated Ducting Kit 110mm x 54mm with Square Holed Single Air Brick
Square Holed Single Air Brick: 9,032mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom overall length (including plastic duct connector – refer to drawing). Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6085455.
Patent Pending.
Product Code: A1DK110X54SQS.
Download Drawing.

Rytons A1® Fire-rated Ducting Kit 110mm x 54mm with Square Holed Single Air Brick Flanged
Square Holed Single Air Brick Flanged (15mm flange with corner screw holes): 9,032mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom overall length (including plastic duct connector – refer to drawing). Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6085457.
Patent Pending.
Product Code: A1DK110X54SQSF.
Download Drawing.

Rytons A1® Fire-rated Ducting Kit 110mm x 54mm with FlowRyt® Single Air Brick
FlowRyt® Single Air Brick: 8,000mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom overall length (including plastic duct connector – refer to drawing). Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6085455.
Patent Pending.
Product Code: A1DK110X54FRS.
Download Drawing.

Rytons A1® Fire-rated Ducting Kit 110mm x 54mm with FlowRyt® Single Air Brick Flanged
FlowRyt® Single Air Brick Flanged (15mm flange with corner screw holes): 8,000mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom overall length (including plastic duct connector – refer to drawing). Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6085457.
Patent Pending.
Product Code: A1DK110X54FRSF.
Download Drawing.

NBS Specifications:

Rytons A1® Fire-rated 90° Balcony Ducting Kits 110mm x 54mm:

Rytons A1® Fire-rated 90° Ducting Kit 110mm x 54mm with Return Grille Single Air Brick Flanged
Return Grille Single Air Brick Flanged (15mm flange with corner screw holes): 7,200mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom drop from underside of duct to face of air brick (refer to drawing).
Custom overall length (including plastic duct connector – refer to drawing). Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6085461.
Patent Pending.
Product Code: A190DK110X54RGSF.
Download Drawing.

Rytons A1® Fire-rated 90° Ducting Kit 110mm x 54mm with Square Holed Single Air Brick Flanged
Square Holed Single Air Brick Flanged (15mm flange with corner screw holes): 9,032mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom drop from underside of duct to face of air brick (refer to drawing).
Custom overall length (including plastic duct connector – refer to drawing). Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6085461.
Patent Pending.
Product Code: A190DK110X54SQSF.
Download Drawing.

Rytons A1® Fire-rated 90° Ducting Kit 110mm x 54mm with Single FlowRyt® Grille Flanged
FlowRyt® Single Air Brick Flanged (15mm flange with corner screw holes): 8,000mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom drop from underside of duct to face of air brick (refer to drawing).
Custom overall length (including plastic duct connector – refer to drawing). Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6085461.
Patent Pending.
Product Code: A190DK110X54FRSF.
Download Drawing.

NBS Specifications:

Rytons A1® Fire-rated S-Shape Window Head Ducting Kits 110mm x 54mm:

Rytons A1® Fire-rated S-Shape Ducting Kit 110mm x 54mm with Return Grille Single Air Brick
Return Grille Single Air Brick: 7,200mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom top or bottom air brick position (refer to drawing).
Custom ‘S’ top (refer to drawing dimension a).
Custom ‘S’ bottom (refer to drawing dimension b).
Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Custom height (refer to drawing dimension c).
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6087692.
Patent Pending.
Product Code: A1SSDK110X54RGS.
Download Drawing.

Rytons A1® Fire-rated S-Shape Ducting Kit 110mm x 54mm with Return Grille Single Air Brick Flanged
Return Grille Single Air Brick Flanged (15mm flange with corner screw holes): 7,200mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom top or bottom air brick position (refer to drawing).
Custom ‘S’ top (refer to drawing dimension a).
Custom ‘S’ bottom (refer to drawing dimension b).
Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Custom height (refer to drawing dimension c).
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6087693.
Patent Pending.
Product Code: A1SSDK110X54RGSF.
Download Drawing.

Rytons A1® Fire-rated S-Shape Ducting Kit 110mm x 54mm with Square Holed Single Air Brick
Square Holed Single Air Brick: 9,032mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom top or bottom air brick position (refer to drawing).
Custom ‘S’ top (refer to drawing dimension a).
Custom ‘S’ bottom (refer to drawing dimension b).
Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Custom height (refer to drawing dimension c).
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6087692.
Patent Pending.
Product Code: A1SSDK110X54SQS.
Download Drawing.

Rytons A1® Fire-rated S-Shape Ducting Kit 110mm x 54mm with Square Holed Single Air Brick Flanged
Square Holed Single Air Brick Flanged (15mm flange with corner screw holes): 9,032mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom top or bottom air brick position (refer to drawing).
Custom ‘S’ top (refer to drawing dimension a).
Custom ‘S’ bottom (refer to drawing dimension b).
Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Custom height (refer to drawing dimension c).
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6087693.
Patent Pending.
Product Code: A1SSDK110X54SQSF.
Download Drawing.

Rytons A1® Fire-rated S-Shape Ducting Kit 110mm x 54mm with FlowRyt® Single Air Brick
FlowRyt® Single Air Brick: 8,000mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom top or bottom air brick position (refer to drawing).
Custom ‘S’ top (refer to drawing dimension a).
Custom ‘S’ bottom (refer to drawing dimension b).
Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Custom height (refer to drawing dimension c).
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6087692.
Patent Pending.
Product Code: A1SSDK110X54FRS.
Download Drawing.

Rytons A1® Fire-rated S-Shape Ducting Kit 110mm x 54mm with FlowRyt® Single Air Brick Flanged
FlowRyt® Single Air Brick Flanged (15mm flange with corner screw holes): 8,000mm² free area (over 90% of the duct).
Custom RAL colour air brick in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
Custom top or bottom air brick position (refer to drawing).
Custom ‘S’ top (refer to drawing dimension a).
Custom ‘S’ bottom (refer to drawing dimension b).
Note: Rytons recommend adding 100mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
Custom height (refer to drawing dimension c).
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Registered Design 6087693.
Patent Pending.
Product Code: A1SSDK110X54FRSF.
Download Drawing.

NBS Specifications:

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