Duct Access Door Door Height 10 in Door Shape Square Door Thickness 1 3/4 in Door Width 10 in Fire Rating Not Rated For Nominal Duct Diameter Not Applicable Hinge Style Tab-In Insulation Material Fiberglass Latch Type Double Cam Material Thickness 24 ga Maximum Temperature Rating Not Applicable Mounting Stud Length Not Applicable Number of Mounting Stud Not Applicable Observation Port Height 10 in Observation Port Material Steel Observation Port Width 10 in