Unbranded 4" Insulated Flexible Ducting 100mm x 10M

Insulated ducting should be used when the duct passes through an unheated area. Minimized heat loss when used with Heat Recovery fans.

10m length. An additional benefit is that a thermally insulated duct offers some measure of acoustic attenuation.

Fire Rating: When assessed against the integrity criterion of BS476: Part 20; 1987, the ducting is capable of providing in excess of 25 minutes integrity from inside to outside.