Rytons A1® Fire-rated Compartment Ducts

General Details

Features and Benefits:

  • A range of tailor-made metal compartment ducts compatible with rectangular HVAC supply and extract ducting.
  • Available in three sizes for use with ducting 110mm x 54mm, 204mm x 60mm and 220mm x 90mm.
  • Made from Class A1 fire-rated galvanised steel and compliant with regulations for the requirement of fire resisting ducts passing through fire-separating elements.
  • Choose ducts with or without attached connectors for plastic ductwork.
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  • No on-site assembly required.
  • Duct supplied with factory fixed joints and seals.

A1 Fire Classification Explained:

  • Rytons A1® Fire-rated Compartment Ducts 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.

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 duct 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 Compartment Duct 110mm x 54mm
Available with or without Rytons RD4C plastic duct connectors.
Custom overall length without connectors (refer to drawing).
Custom overall length with a connector at each end (refer to drawing). Note: Rytons recommend adding 200mm to the compartment measurement to ensure the connectors finish outside of the void.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Product Code: A1CD110X54.
Download Drawing.

Rytons A1® Fire-rated Compartment Duct 204mm x 60mm
Available with or without Rytons RD5C plastic duct connectors.
Custom overall length without connectors (refer to drawing).
Custom overall length with a connector at each end (refer to drawing). Note: Rytons recommend adding 200mm to the compartment measurement to ensure the connectors finish outside of the void.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Product Code: A1CD204X60.
Download Drawing.

Rytons A1® Fire-rated Compartment Duct 220mm x 90mm
Available with or without Rytons RD6C plastic duct connectors.
Custom overall length without connectors (refer to drawing).
Custom overall length with a connector at each end (refer to drawing). Note: Rytons recommend adding 200mm to the compartment measurement to ensure the connectors finish outside of the void.
Properties: Class A1 fire-rated 0.9mm galvanised steel. Spot welded. Everbuild Fire Mate intumescent and acoustic sealant used on all gaps.
Product Code: A1CD220X90.
Download Drawing.

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