The ASTROflame range of Astro DS duct sleeves are intended for use where a ventilation duct passes through a fire CE Certification for Astro Duct Sleeverated 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 at least 2 hours except the 220x90mm version which is rated 60mins.
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. They are unsuitable for use with plastic trunking or can be used with cabling passed directly through the sleeve.
To install select the appropriate size sleeve, using a template mark and cut a hole. Fit the sleeve over the end of trunking or slit to fit around the required area, reseal the sleeve if slit with aluminium tape. Slide the sleeve into position and fill any gaps with suitable mortar, mastic or sealant
See attached data sheets for more information.
Duct sleeve with 2 hr rating to BS 476 & EN 1366-3:2009, EN 13501-1 Construction covered.
A 140 to 300 mm (dependent on requirement) deep steel sleeve that is positioned around the ductwork....