Dimensions: The wall air vent opening size of this hvac return air filter grille is 11.8"W X 3.9"H. The external dimensions are 14.2"W X 5.6"H. The thickness is adjustable to fit walls with a thickness of 3.8”-7.4.” Note: Measure the size of the wall vent duct/drywall opening.

New Open Box-Item is from an Amazon overstock/return pallet. 30 day hassle free returns

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