500mm INSPECTION Pipe Length. The effective installed length is 462mm. This item comes with a FREE Locking Band.
The Structural Locking Band increases the maximum unsupported height of the chimney to 2500mm. The Structural Locking Band must be used on the joint of each freestanding part. It replaces the free locking band.
Twin wall components are insulated and can be used as an independent chimney. Twin wall flue can be used internally or externally and is completely weatherproof. Twin Wall flue systems must be used when passing through any wall or roof of a building. Our flues are made from stainless steel 316 inner liner, stainless steel 304 outer liner and has high density insulation between these layers. A minimum gap of 50mm must be maintained between our twin wall flue and any combustible material.