Rytons A1® Fire-rated Metal Double Air Bricks

General Details
  • A range of tailor-made metal double air bricks.
  • Made from Class A1 fire-rated galvanised steel and compliant with regulations for the requirement of non-combustible materials in the external walls of high-rise ‘relevant buildings’ over 18m (11m in Scotland), buildings 11m and above undergoing unsafe cladding remediation work, and the external surfaces of all ‘residential’ purpose group buildings more than 11m high.
  • Three grille styles available to satisfy the varying design, airflow, and vent placement requirements of buildings.  For cladding, flanged options cover cut edges to maintain the external appearance.
  • Provide high air flows whilst maintaining low resistance.
  • Custom powder coating as standard.  Choose from the RAL Classic colour chart in matt, semi-gloss or gloss finish (achieving Class A2-s1, d0) for an air brick that matches cladding or brickwork.  Signature architectural coatings are also available.
  • Built-in weather protection.  Drainage holes provide discreet water outlets, and louvred styles feature angled grilles to promote runoff, reducing the risk of water transfer into the cavity or ducting.
  • Brick size (rather than duct size) for easy installation using standard mortar joints for a neat appearance in brickwork.

A1 Fire Classification Explained:

  • Rytons A1® Fire-rated Metal Double 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.

Disclaimers:

  • The installation of metal air bricks alone will not satisfy the requirements of high-rise buildings which require all materials forming part of the external wall, or a specified attachment, to be made from non-combustible materials.  For compliant ducting kits, see Rytons A1 Fire-rated Range.
  • We do not recommend the purchase of a metal air brick separate to the plenum/ducting.  As components are made by hand and have a size tolerance of +/- 5%, we can only guarantee compatibility between the air brick and plenum/ducting if fabricated and supplied as a kit.

Associated Ducting Kits:

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).

Specifications:

  • If you can’t see an air brick to meet your requirements, we offer a bespoke service to design, fabricate and supply the perfect solution.  To discuss your requirements, call our technical sales office on 01536 511874 or email admin@rytons.com.

Rytons A1® Fire-rated Return Grille Double Air Brick
215mm L x 135mm H x 50mm D (nominal size).
Custom RAL colour in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
18,720mm² free area per unit.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating.
Registered Design 6078059.
Patent Pending.
Product Code: A1RGD.
Download Drawing.

Rytons A1® Fire-rated Return Grille Double Air Brick Flanged
215mm L x 135mm H x 50mm D (nominal size) plus 15mm flange with corner screw holes.
Custom RAL colour in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
18,720mm² free area per unit.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating.
Registered Design 6078060.
Patent Pending.
Product Code: A1RGDF.
Download Drawing.

Rytons A1® Fire-rated Square Holed Double Air Brick
215mm L x 135mm H x 50mm D (nominal size).
Custom RAL colour in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
18,064mm² free area per unit.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating.
Patent Pending.
Product Code: A1SQD.
Download Drawing.

Rytons A1® Fire-rated Square Holed Double Air Brick Flanged
215mm L x 135mm H x 50mm D (nominal size) plus 15mm flange with corner screw holes.
Custom RAL colour in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
18,064mm² free area per unit.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating.
Patent Pending.
Product Code: A1SQDF.
Download Drawing.

Rytons A1® Fire-rated FlowRyt® Double Air Brick
215mm L x 135mm H x 50mm D (nominal size).
Custom RAL colour in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
18,000mm² free area per unit.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating.
Registered Design 6109959.
Patent Pending.
Product Code: A1FRD.
Download Drawing.

Rytons A1® Fire-rated FlowRyt® Double Air Brick Flanged
215mm L x 135mm H x 50mm D (nominal size) plus 15mm flange with corner screw holes.
Custom RAL colour in matt, semi-gloss or gloss finish achieving Class A2-s1, d0.
18,000mm² free area per unit.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating.
Registered Design 6109958.
Patent Pending.
Product Code: A1FRDF.
Download Drawing.

NBS Specifications:

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Rytons is proud to be a family run business and British manufacturer since 1972

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