Rectangular or Round
Fire Damper Access Door. As a building owner, the new fire and smoke damper inspection requirements create further challenges for existing duct construction methods. More specifically proper access to these dampers. It is next to impossible to properly maintain your fire and smoke dampers unless you have adequate access to them. NFPA 80(2013) 19.2.3 Access states Dampers equipped with fusible links, internal operators, or both shall be provided with an access door that is not less than 12 in. (305mm) square or provided with a removable duct section.