Astroflame Intumescent Duct Sleeve

Astroflame Intumescent Duct Sleeve

Quick Overview

• CE Marked.
• Tested in accordance with BS 476 Parts 20 and 22 : 1987and EN 1366-3 : 2009.
• Uncapped / Uncapped (Open | Open) fire tested as required for ventilation systems.
• Suitable for use through a wide range of fire partition walls.
• Offers excellent acoustic insulation.
• Maintains the thermal insulation of the duct through the penetration.
• Maintains vapour seal of existing insulation.
• Sleeve can be easily fitted only requiring access from one side.
• Allows the thermal movement of the duct.
• Simple to install without special tools or skills.

The Astroflame range of Astro DS duct sleeves are intended for use where a ventilation duct passes through a fire rated wall. The sleeve maintains the integrity of the fire rated wall which would otherwise be lost.

In the event of a fire, the advanced Astro DS Duct Sleeve will expand with the heat, crushing the duct and closing off the hole to the fire for up to 120 minutes except the 220x90mm version which is rated up to 60 minutes.

The Ventilation duct sleeves are available to fit all common sizes of plastic ventilation duct and are suitable for retro fitting with access only required from one side.

Product Availability

Astro DS Duct sleeves are currently available in the following nominal sizes: