Rytons A1® Fire-rated 100mm Dia. Ducting Kits with Double Air Bricks

General Details

Features and Benefits:

  • A range of tailor-made 100mm dia. spiral metal ducting kits with a choice of rectangular or round connector to suit HVAC supply and extract ducting 110x54mm/100mm dia.
  • Made from Class A1 fire-rated galvanised steel and compliant with regulations for the requirement of non-combustible ducting in the external walls of high-rise buildings over 18m (11m in Scotland) and those 11m and above undergoing unsafe cladding remediation work.
  • Three air brick grille styles satisfy the varying design, airflow, and vent placement requirements of buildings.  For cladding, flanged options cover cut edges to maintain the external appearance.
  • Air bricks maintain low resistance and have a high airflow of over 90% of the free area of the duct.
  • Custom powder coated air brick.  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 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.
  • Telescopic fitting air brick allows the overall length of the kit to be extended during installation giving the flexibility to handle minor variations in the external façade.
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  • Supplied ready to install with no on-site assembly required.
  • Duct factory fitted to the plenum adaptor.
  • No screw fixing or sealing required, saving time, labour and ensuring correct alignment and airtight joints throughout.

A1 Fire Classification Explained:

  • Rytons A1® Fire-rated 100mm Dia. Ducting Kits 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 is not compromised at a temperature of 800°C, as required by the Building Regulations Approved Document B for ductwork spanning the cavity.  Classification: A1.  Definition: Non-combustible.  Description: No contribution to fire.

Reference Material:

  • Building Regulation 7(2) – Ban of combustible materials in the external wall of buildings.
  • Building Regulation Approved Document B (fire safety).
  • Building standards Scotland technical handbook – domestic (2.7).

Specifications:

  • If you can’t see a ducting kit 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 Ducting Kit 100mm Dia. with Return Grille Double Air Brick
Return Grille Double Air Brick: 18,720mm² 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 connector for 110mm x 54mm or 100mm dia. ducting.
110mm x 54mm – custom overall length (including plastic duct connector RD4FR+RD4CONN – refer to drawing). Note: Rytons recommend adding 200mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
100mm dia. – custom overall length (including plastic duct connector RD4CONN – 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/0.5mm 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 6109948/6109949.
Product Code: A1DK100RGD.
Download Drawing.

Rytons A1® Fire-rated Ducting Kit 100mm Dia. with Return Grille Double Air Brick Flanged
Return Grille Double Air Brick Flanged (15mm flange with corner screw holes): 18,720mm² 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 connector for 110mm x 54mm or 100mm dia. ducting.
110mm x 54mm – custom overall length (including plastic duct connector RD4FR+RD4CONN – refer to drawing). Note: Rytons recommend adding 200mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
100mm dia. – custom overall length (including plastic duct connector RD4CONN – 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/0.5mm 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 6109946/6109947.
Product Code: A1DK100RGDF.
Download Drawing.

Rytons A1® Fire-rated Ducting Kit 100mm Dia. with Square Holed Double Air Brick
Square Holed Double Air Brick: 18,064mm² 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 connector for 110mm x 54mm or 100mm dia. ducting.
110mm x 54mm – custom overall length (including plastic duct connector RD4FR+RD4CONN – refer to drawing). Note: Rytons recommend adding 200mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
100mm dia. – custom overall length (including plastic duct connector RD4CONN – 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/0.5mm 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 6109948/6109949.
Product Code: A1DK100SQD.
Download Drawing.

Rytons A1® Fire-rated Ducting Kit 100mm Dia. with Square Holed Double Air Brick Flanged
Square Holed Double Air Brick Flanged (15mm flange with corner screw holes): 18,064mm² 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 connector for 110mm x 54mm or 100mm dia. ducting.
110mm x 54mm – custom overall length (including plastic duct connector RD4FR+RD4CONN – refer to drawing). Note: Rytons recommend adding 200mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
100mm dia. – custom overall length (including plastic duct connector RD4CONN – 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/0.5mm 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 6109946/6109947.
Product Code: A1DK100SQDF.
Download Drawing.

Rytons A1® Fire-rated Ducting Kit 100mm Dia. with FlowRyt® Double Air Brick
FlowRyt® Double Air Brick: 18,000mm² 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 connector for 110mm x 54mm or 100mm dia. ducting.
110mm x 54mm – custom overall length (including plastic duct connector RD4FR+RD4CONN – refer to drawing). Note: Rytons recommend adding 200mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
100mm dia. – custom overall length (including plastic duct connector RD4CONN – 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/0.5mm 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 6109948/6109949.
Product Code: A1DK100FRD.
Download Drawing.

Rytons A1® Fire-rated Ducting Kit 100mm Dia. with FlowRyt® Double Air Brick Flanged
FlowRyt® Double Air Brick Flanged (15mm flange with corner screw holes): 18,000mm² 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 connector for 110mm x 54mm or 100mm dia. ducting.
110mm x 54mm – custom overall length (including plastic duct connector RD4FR+RD4CONN – refer to drawing). Note: Rytons recommend adding 200mm to the external wall measurement to ensure the duct and connector finish within the inner leaf.
100mm dia. – custom overall length (including plastic duct connector RD4CONN – 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/0.5mm 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 6109946/6109947.
Product Code: A1DK100FRDF.
Download Drawing.

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