250mm Spiral

250mm Zinc-plated Mild Steel Spiral Tube used for ventilation systems. Spiral ducting is manufactured 0.6mm of Zinc-plated Mild steel to HVCA DW 144 specification unless otherwise stated. An alt...

250mm Spiral end cap. Up to 315mm they are both male and female for flexibility. The male end will insert into spiral ducting, the female end will go over spigots or fittings....