FAD-SS - Stainless steel access door for rectangular ducting

The stainless steel access doors for rectangular ducting (FAD-SS) consist of two panels connected between themselves with two screws, springs and knobs. The inner panel will be slided inside the duct, and the outside panel will then be compressed by tightening both knobs. Access doors allow easy admittance to the ventilation ducting for the purpose of inspection and cleaning.