Features and Benefits:
Rytons A1® Fire-rated Ducting Kits 110mm x 54mm with Single Air Bricks
General Details
- 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 suit a variety of locations.
- Made from A1 classified galvanised steel for fire safety, strength and durability.
- Non-combustible, suitable for multi-storey and higher-risk buildings.
- Choice of air brick styles to suit different airflow and design needs, with flanged options for cladding applications to conceal cut edges for a neat finish.
- Air bricks maintain low resistance and high airflow, exceeding 90% of the duct free area.
- Grilles supplied custom powder coated to Class A2-s1, d0, with options from the RAL Classic colour chart in matt, semi-gloss or gloss finishes. Signature architectural finishes available on request.
- Integrated weather protection includes discreet drainage holes and angled louvres to promote water runoff and reduce the risk of transfer into the duct.
- Air bricks and plenums are brick-sized (not duct-sized) for simple installation using standard mortar joints, ensuring an aligned appearance in brickwork.
- Suitable for:
- The external walls of high-rise relevant buildings over 18m high (11m high in Scotland).
- The external walls of relevant buildings 11m+ in height or more than 5 storeys, undergoing unsafe cladding remediation work (Building Safety Act 2022).
- The external walls of higher-risk buildings at least 18m high or with at least 7 storeys (Building Safety Act 2022).
- 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.
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.
- Classification: A1. Definition: Non-combustible. Description: No contribution to fire.
Reference Material:
- England & Wales: view extracts >>
- Approved Document B: Fire safety (Volume 1) (2019 edition incorporating 2020 and 2022 amendments) for England.
- Approved Document B: Fire safety (Volume 2) (2006 edition incorporating 2010, 2013, 2016, 2017 and 2020 amendments) for Wales.
- The Building Safety Act.
- Scotland: view extracts >>
- Building Standards Scotland Domestic Technical Handbook.
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 Approved.
Product Code: A1DK110X54RGS.
Download Drawing. | Download Golden Thread.
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 Approved.
Product Code: A1DK110X54RGSF.
Download Drawing. | Download Golden Thread.
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 Approved.
Product Code: A1DK110X54SQS.
Download Drawing. | Download Golden Thread.
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 Approved.
Product Code: A1DK110X54SQSF.
Download Drawing. | Download Golden Thread.
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 Approved.
Product Code: A1DK110X54FRS.
Download Drawing. | Download Golden Thread.
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 Approved.
Product Code: A1DK110X54FRSF.
Download Drawing. | Download Golden Thread.
NBS Source 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 Approved.
Product Code: A190DK110X54RGSF.
Download Drawing. | Download Golden Thread.
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 Approved.
Product Code: A190DK110X54SQSF.
Download Drawing. | Download Golden Thread.
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 Approved.
Product Code: A190DK110X54FRSF.
Download Drawing. | Download Golden Thread.
NBS Source 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 Approved.
Product Code: A1SSDK110X54RGS.
Download Drawing. | Download Golden Thread.
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 Approved.
Product Code: A1SSDK110X54RGSF.
Download Drawing. | Download Golden Thread.
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 Approved.
Product Code: A1SSDK110X54SQS.
Download Drawing. | Download Golden Thread.
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 Approved.
Product Code: A1SSDK110X54SQSF.
Download Drawing. | Download Golden Thread.
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 Approved.
Product Code: A1SSDK110X54FRS.
Download Drawing. | Download Golden Thread.
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 Approved.
Product Code: A1SSDK110X54FRSF.
Download Drawing. | Download Golden Thread.
NBS Source Specifications:
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Pressure Loss Data
Golden Thread
