In towering structures, small ventilation openings serve not only as channels for air circulation but as critical barriers against fire spread. The Rytons A1® Fire-Rated Metal Double Ventilation Brick series represents an innovative solution designed to meet these safety demands, combining exceptional fire resistance with precision engineering to deliver reliable ventilation for contemporary buildings.
Product Overview
Engineered for high-rise and high-risk buildings with stringent fire safety requirements, the Rytons A1® series is manufactured from A1-rated fireproof galvanized steel, offering non-combustibility, high strength, and durability. Custom powder coating services are available, with options for matte, semi-gloss, or high-gloss finishes from the RAL Classic color chart, including bespoke architectural finishes to accommodate diverse design specifications.
Key Features and Advantages
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Superior Fire Performance:
Compliant with European Commission paper 96/603/EC and BS EN 13501-1:2018 standards, the A1-rated galvanized steel construction ensures zero combustion or fire propagation.
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Structural Resilience:
Galvanized steel provides long-term resistance to environmental degradation while maintaining structural integrity.
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Design Flexibility:
Available in flanged and non-flanged variants to accommodate airflow and aesthetic requirements. Flange options conceal cut edges for seamless installation.
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Optimized Airflow:
Maintains low resistance and high ventilation efficiency without compromising fire safety.
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Aesthetic Integration:
Customizable powder-coated finishes harmonize with building exteriors.
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Weather Protection:
Integrated drainage features, including concealed weep holes and angled louvres, mitigate water ingress risks.
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Simplified Installation:
Brick-sized units facilitate alignment with masonry structures using standard mortar joints.
Applications
The product series is engineered for:
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Buildings exceeding 18m in height (11m in Scotland).
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Structures over 11m or five stories undergoing unsafe cladding remediation (per the Building Safety Act 2022).
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Higher-risk buildings ≥18m or seven stories (Building Safety Act 2022).
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Residential exteriors above 11m.
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Residential exteriors ≤11m where walls are within 1m of property boundaries.
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All residential and non-residential constructions.
Product Specifications
Rytons A1® Fire-Rated Louvre Double Vent Brick
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Dimensions: 215mm (L) × 135mm (H) × 50mm (D) (nominal)
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Free area: 18,720mm²
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Material: A1-rated 0.9mm galvanized steel with A2-s1, d0 fire-rated RAL powder coating
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Product code: A1RGD
Flanged Variant
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Adds 15mm flange with corner screw holes
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Product code: A1RGDF
Rytons A1® Fire-Rated Square Aperture Double Vent Brick
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Free area: 18,064mm²
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Product code: A1SQD (standard), A1SQDF (flanged)
Rytons A1® Fire-Rated FlowRyt® Double Vent Brick
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Free area: 18,000mm²
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Product code: A1FRD (standard), A1FRDF (flanged)
Complementary Products
For optimal performance, compatible A1® fire-rated ducting kits are available in multiple configurations:
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204mm × 60mm rectangular
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220mm × 90mm rectangular
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100mm and 125mm diameter circular
Technical Considerations
Independent installation of metal vent bricks does not satisfy high-rise building regulations, which mandate all exterior wall components to comprise non-combustible materials. Compatibility between manually fabricated components (with ±5% dimensional tolerance) is only guaranteed when supplied as pre-assembled kits.
Fire Rating Clarification
Per BS EN 13501-1:2018, galvanized steel qualifies as untested A1-rated material (non-combustible, no fire contribution).
Regulatory Compliance
The series meets construction standards across:
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England & Wales: Approved Document B (2019/2022 amendments), Building Safety Act
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Scotland: Building Standards Technical Handbook
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Northern Ireland: Technical Booklets B (2013) and E (2012)
