Spiral Access Doors

Ducting Access Door for Circular Duct Ducting access doors allow easy inspection of circular duct. Our curved doors are easy and fast to install and provide easy access to fire and volume control dampers. Access doors are a required item when fire and volume control dampers are built into ventilation systems. Designed to provide rapid access to smoke, fire and volume control dampers or other equipment mounted inside circular spiral ductwork. Access doors to suit circular spiral ducting with an easy fit / removable design that “sandwiches” between circular spiral ducting. Creates an airtight seal at duct inspection points. Key Features Double skinned construction. Manufactured from 0.8mm galvanised mild steel (as standard). Individually pressed to suit duct diameter. 6mm closed cell polyethylene gasket on the inner panel allowing the door to be sealed to the duct internally. Thermo plastic, tri-star threaded (m10) hand wheels, tightened onto press fitted internal fully threaded (m10) set bolts. (Zinc plated mild steel). Stainless steel springs fitted between the inner and outer panel. Set bolt ends are pressed to which stops the access door being completely disassembled. Optional -rubber edging strip (cut to size) for the duct hole rough edges, reducing the risk of personal injury when the access door is removed for duct cleaning and maintenance purposes. Available Options (Contact us to to order these options – Fast Lead Times) Rubber -Safe edging strip – for the hole that is cut in the duct and is mounted to rough edges to reduce the risk of personal injury when the access door is removed for duct cleaning and maintenance purposes. Factory fitted safety retaining chain.Material Options 304 Stainless Steel. 316 Stainless Steel