Rytons A1® Fire-rated Metal Double Air Bricks

General Details

Features and Benefits:

  • A range of custom-made metal double air bricks.
  • 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.
  • Provide high airflows whilst maintaining low resistance.
  • Supplied custom powder coated 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.
  • Brick size (rather than duct size) for easy installation using standard mortar joints for a neat appearance in brickwork.
  • Related Ducting Kits:
  • Rytons A1® Fire-rated Ducting Kits 204mm x 60mm with Double Air Bricks.
  • Rytons A1® Fire-rated Ducting Kits 220mm x 90mm with Double Air Bricks.
  • Rytons A1® Fire-rated Ducting Kits 100mm Dia. with Double Air Bricks.
  • Rytons A1® Fire-rated Ducting Kits 125mm Dia. with Double Air Bricks.
  • 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.
  • All other residential and non-residential buildings.
  • Bespoke design service available. For further information contact our Technical Sales Office on 01536 511874 or email admin@rytons.com.

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 purchasing a metal air brick separately from the plenum/duct. As the components are hand made and have a size tolerance of +/- 5%, we can only guarantee compatibility between the air brick and the plenum/duct if they are manufactured and supplied as a kit.

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.
  • 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.
  • 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 Metal Double Air Bricks:

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 Approved.
Product Code: A1RGD.
Download Drawing.  |  Download Golden Thread.

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 Approved.
Product Code: A1RGDF.
Download Drawing.  |  Download Golden Thread.

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 Approved.
Product Code: A1SQD.
Download Drawing.  |  Download Golden Thread.

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 Approved.
Product Code: A1SQDF.
Download Drawing.  |  Download Golden Thread.

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 Approved.
Product Code: A1FRD.
Download Drawing.  |  Download Golden Thread.

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 Approved.
Product Code: A1FRDF.
Download Drawing.  |  Download Golden Thread.

NBS Source Specifications:

MiB_Logo_Horizontal_Colour

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

Pressure Loss Data

Golden Thread