2"W x 4"H [Duct Opening Size] 2 Way Steel Air Supply Diffuser | Register Vent Cover Grill for Sidewall and Ceiling | White | Outer Dimensions: 13.75"W X 5.75"H for 12x4 Duct Opening
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2"W x 4"H [Duct Opening Size] 2 Way Steel Air Supply Diffuser | Register Vent Cover Grill for Sidewall and Ceiling | White | Outer Dimensions: 13.75"W X 5.75"H for 12x4 Duct Opening