7" (175mm) Shieldmaster Twin Wall Flue Pipe

7" Shieldmaster Twin Wall insulated flue pipes have an accurate 175mm internal diameter, 30mm of compressed insulation and an external diameter of 225mm.

A Locking Band is provided with all parts that require one for safe and secure connections without the need for extra sealants or cements.

Please note, all items listed below which fit around the 7" Shieldmaster Twin Wall such as Wall Brackets, Finishing Plates and Storm Collars will measure 225mm to accomodate the greater external diameter of the pipes.