Duct Access Door, Door Height 12 in, Door Shape Rectangular, Door Thickness 7/8 in, Door Width 16 in, Fire Rating Not Rated, For Nominal Duct Diameter 21 in, 22 in, Hinge Style None, Insulation Material Fiberglass, Latch Type Knobs, Material Thickness 20 ga, Maximum Temperature Rating 200 Degrees F, Mounting Stud Length 2 in, Number of Mounting Stud 2, Observation Port Height Not Applicable, Observation Port Material Steel, Observation Port Width Not Applicable, Rough Opening Height 11 1/2 in
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