Duct Access Door, Door Height 6 in, Door Shape Square, Door Thickness 2 1/8 in, Door Width 6 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 175 Degrees F, Mounting Stud Length 2 in, Number of Mounting Stud Not Applicable, Observation Port Height Not Applicable, Observation Port Material Steel, Observation Port Width Not Applicable