250mm Spiral

250mm EPNF Spiral Duct Termination Grills are male-ended fittings to be inserted directly into round Spiral ducts. The 12.7x12.7mm mesh installed at the termination end secures the air exhaust again...

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...