Rytons A1 Fire-rated 100mm Dia. Ducting Kits with Double Air Brick Grilles

General Details

Rytons A1 Fire-rated 100mm Dia. Ducting Kits with Double Air Brick Grilles

  • A range of custom-made 100mm dia. galvanised steel spiral metal ducting kits with a choice of rectangular or round connector to suit HVAC and extract ducting 110mm x 54mm/100mm dia.
  • Choose from three styles of air brick to achieve the design, air flow and positioning requirements of the development.
  • Air brick supplied in your choice of RAL colour (achieving A2-s1, d0), to complement the façade and maintain the external appearance of the building.
  • New, improved air brick features discreet precautionary drainage holes, providing an outlet for any water ingress to prevent transfer into the ducting.
  • No on-site assembly required – each kit supplied as a single unit, with sealed joints, for easy handling, efficient installation, and trouble-free commissioning.
  • 125mm dia. and 150mm dia. ducting kits also available.
  • Suitable for use in high-rise buildings with a storey 18m or more above ground level to Regulation 7(2) and Building Regulations Approved Document B.
  • Suitable for use in buildings with a storey 11m or more above ground level to Building (Scotland) technical handbook 2019: domestic and non-domestic, 2.7.
  • Product considered fire class A1 without testing, as per European Commission paper 96/603/EC referred to in BS EN 13501-1:2018.
  • Material 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.

Rytons A1 Fire-rated 100mm Dia. Ducting Kits with Double Air Brick Grilles:

Rytons A1 Fire-rated Ducting Kit 100mm Dia. with Double Return Grille
Double Return Grille Air Brick. 17,280mm² free area.
Custom RAL colour grille in matt, semi-gloss or gloss finish (achieving A2-s1, d0).
Choice of two ducting connectors:
1) With connector for 110mm x 54mm ducting. Custom overall length (including fitted RD4FR+RD4CONN plastic Flat Channel Horizontal Adaptor 159mm D). Note: Rytons recommend 200mm in addition to the measurement from the outer leaf to the inner leaf.
2) With connector for 100mm dia. ducting. Custom overall length (including fitted RD4CONN plastic Pipe Connector 60mm D). Note: Rytons recommend 100mm in addition to the measurement from the outer leaf to the inner leaf.
Properties: A1 fire-rated 0.9mm/0.5mm galvanised steel. Fire-rated RAL colour powder coating (achieving a test result of A2-s1, d0). Spot welded. Ever Build intumescent fire protection and acoustic sealant (product code FIREMATE) used on all gaps.
Registered Designs 6109948 and 6109949.
Product Code: A1DK100RGD.

Rytons A1 Fire-rated Ducting Kit 100mm Dia. with Double Return Grille Flanged
Double Return Grille Air Brick with 15mm flange and corner screw holes. 17,280mm² free area.
Custom RAL colour grille in matt, semi-gloss or gloss finish (achieving A2-s1, d0).
Choice of two ducting connectors:
1) With connector for 110mm x 54mm ducting. Custom overall length (including fitted RD4FR+RD4CONN plastic Flat Channel Horizontal Adaptor 159mm D). Note: Rytons recommend 200mm in addition to the measurement from the outer leaf to the inner leaf.
2) With connector for 100mm dia. ducting. Custom overall length (including fitted RD4CONN plastic Pipe Connector 60mm D). Note: Rytons recommend 100mm in addition to the measurement from the outer leaf to the inner leaf.
Properties: A1 fire-rated 0.9mm/0.5mm galvanised steel. Fire-rated RAL colour powder coating (achieving a test result of A2-s1, d0). Spot welded. Ever Build intumescent fire protection and acoustic sealant (product code FIREMATE) used on all gaps.
Registered Designs 6109946 and 6109947.
Product Code: A1DK100RGDF.

Rytons A1 Fire-rated Ducting Kit 100mm Dia. with Double Square Holed Grille
Double Square Holed Air Brick. 18,064mm² free area.
Custom RAL colour grille in matt, semi-gloss or gloss finish (achieving A2-s1, d0).
Choice of two ducting connectors:
1) With connector for 110mm x 54mm ducting. Custom overall length (including fitted RD4FR+RD4CONN plastic Flat Channel Horizontal Adaptor 159mm D). Note: Rytons recommend 200mm in addition to the measurement from the outer leaf to the inner leaf.
2) With connector for 100mm dia. ducting. Custom overall length (including fitted RD4CONN plastic Pipe Connector 60mm D). Note: Rytons recommend 100mm in addition to the measurement from the outer leaf to the inner leaf.
Properties: A1 fire-rated 0.9mm/0.5mm galvanised steel. Fire-rated RAL colour powder coating (achieving a test result of A2-s1, d0). Spot welded. Ever Build intumescent fire protection and acoustic sealant (product code FIREMATE) used on all gaps.
Registered Designs 6109948 and 6109949.
Product Code: A1DK100SQD.

Rytons A1 Fire-rated Ducting Kit 100mm Dia. with Double Square Holed Grille Flanged
Double Square Holed Air Brick with 15mm flange and corner screw holes. 18,064mm² free area.
Custom RAL colour grille in matt, semi-gloss or gloss finish (achieving A2-s1, d0).
Choice of two ducting connectors:
1) With connector for 110mm x 54mm ducting. Custom overall length (including fitted RD4FR+RD4CONN plastic Flat Channel Horizontal Adaptor 159mm D). Note: Rytons recommend 200mm in addition to the measurement from the outer leaf to the inner leaf.
2) With connector for 100mm dia. ducting. Custom overall length (including fitted RD4CONN plastic Pipe Connector 60mm D). Note: Rytons recommend 100mm in addition to the measurement from the outer leaf to the inner leaf.
Properties: A1 fire-rated 0.9mm/0.5mm galvanised steel. Fire-rated RAL colour powder coating (achieving a test result of A2-s1, d0). Spot welded. Ever Build intumescent fire protection and acoustic sealant (product code FIREMATE) used on all gaps.
Registered Designs 6109946 and 6109947.
Product Code: A1DK100SQDF.

Rytons A1 Fire-rated Ducting Kit 100mm Dia. with Double FlowRyt® Grille
Double FlowRyt® Air Brick. 18,000mm² free area.
Custom RAL colour grille in matt, semi-gloss or gloss finish (achieving A2-s1, d0).
Choice of two ducting connectors:
1) With connector for 110mm x 54mm ducting. Custom overall length (including fitted RD4FR+RD4CONN plastic Flat Channel Horizontal Adaptor 159mm D). Note: Rytons recommend 200mm in addition to the measurement from the outer leaf to the inner leaf.
2) With connector for 100mm dia. ducting. Custom overall length (including fitted RD4CONN plastic Pipe Connector 60mm D). Note: Rytons recommend 100mm in addition to the measurement from the outer leaf to the inner leaf.
Properties: A1 fire-rated 0.9mm/0.5mm galvanised steel. Fire-rated RAL colour powder coating (achieving a test result of A2-s1, d0). Spot welded. Ever Build intumescent fire protection and acoustic sealant (product code FIREMATE) used on all gaps.
Registered Designs 6109948 and 6109949.
Product Code: A1DK100FRD.

Rytons A1 Fire-rated Ducting Kit 100mm Dia. with Double FlowRyt® Grille Flanged
Double FlowRyt® Air Brick with 15mm flange and corner screw holes. 18,000mm² free area.
Custom RAL colour grille in matt, semi-gloss or gloss finish (achieving A2-s1, d0).
Choice of two ducting connectors:
1) With connector for 110mm x 54mm ducting. Custom overall length (including fitted RD4FR+RD4CONN plastic Flat Channel Horizontal Adaptor 159mm D). Note: Rytons recommend 200mm in addition to the measurement from the outer leaf to the inner leaf.
2) With connector for 100mm dia. ducting. Custom overall length (including fitted RD4CONN plastic Pipe Connector 60mm D). Note: Rytons recommend 100mm in addition to the measurement from the outer leaf to the inner leaf.
Properties: A1 fire-rated 0.9mm/0.5mm galvanised steel. Fire-rated RAL colour powder coating (achieving a test result of A2-s1, d0). Spot welded. Ever Build intumescent fire protection and acoustic sealant (product code FIREMATE) used on all gaps.
Registered Designs 6109946 and 6109947.
Product Code: A1DK100FRDF.

Reference Material:

  • The Building Regulations Approved Document B (Fire safety) – Volume 1: Dwellings (2019 edition). Appendix B: Performance of materials, products and structures B4. NOTE: Regulation 7(2) limits components used in or on the external walls of certain buildings to materials achieving class A2-s1, d0 or class A1 (see Section 10). Assessments cannot be used to demonstrate compliance with this requirement.
  • The Building Regulations Approved Document B (Fire safety) – Volume 2: Buildings other than dwellings (2019 edition). Appendix B: Performance of materials, products and structures B4. NOTE: Regulation 7(2) limits components used in or on the external walls of certain buildings to materials achieving class A2-s1, d0 or class A1 (see Section 10). Assessments cannot be used to demonstrate compliance with this requirement.
  • Building (Scotland) technical handbook 2019: domestic. 2.7 Spread on external walls. 2.7.1 External wall cladding. Storey height more than 11m – Where the building has a storey at a height of more than 11m above the ground the external wall cladding system should be constructed of products achieving European Classification A1 or A2.

  • Building (Scotland) technical handbook 2019: non-domestic. 2.7 Spread on external walls. 2.7.2 Specified attachments. There is a risk of vertical fire spread from specified attachments to an external wall including balconies, solar panels and solar shading. Solar shading are devices attached to an external wall to reduce heat gain within a building by deflecting sunlight. Fire-fighters may not be able to apply a water jet from a fire-fighting hose directly onto a fire that has spread onto specified attachments high above the ground.
  • Where the building has a storey at a height of more than 11m above the ground, specified attachments should be constructed of products achieving European Classification A1 or A2.
  • Extracts from NHBC Technical Extra 25.
  • Page 14: Note: in most cases, a panel of the tested system wouldn’t contain all the components necessary to function as an external wall (for example, cavity trays, weep holes, etc.). Therefore, any additional components must achieve Class A1or A2-s1, d0.
  • Page 16: Minor components within or passing through an external wall: The aim of the regulation is to remove all combustible components from, or within, an external wall.  The majority of air bricks, weep holes, ventilation ducts, etc. can be produced from materials meeting Class A1 or A2-s1, d0, so products meeting these classifications should be used.