£70.89
Our internal diameter Dura Twin Wall straight lengths are available to buy in 250mm, 500mm, 800mm and 1000mm sections. ***locking bands purchased separately*** Dura Twin Wall (DTW) has been designed by Flue & Ducting Ltd with the installer in mind and is available for same day and next day delivery UK wide. We have 5, 6, 7 and 8" all in stoc...