The IPFQ-HT access door is the simplest, tried and tested, and very convenient closure for access openings in square ducts.
The design of the IPFQ-HT access door and its gasket profile provide a perfect seal around the duct opening. The access
door consists of two covers which clamp the edges of the
opening via two lock knobs. When closed, the access door provides an air-tight seal. This solution provides air tightness class D.
