Astroflame Intumescent Duct Sleeve

The Astroflame intumescent duct sleeves are simple to fit and cost effective (one sleeve can replace too collars). The sleeve can be fitted from one side and requires no additional mastic or specialist tools. Upon contact with the high temperatures present in a fire, the intumescent material will expand to seal the penetration, effectively blocking the smoke and flames from passing through.

• 2 hour fire rating
• Simple installation - no specialist tools needed
• Available in a range of duct sizes
• Cost effective - one sleeve can replace two collars
• Easily trimmed to reduce wastage
• Allows the duct to expand/contract
• Provides excellent acoustic insulation
• Tested to BS 476-22:1987