Description
12" x 12" [Duct Opening] Ceiling Supply Diffuser Vent Cover – 1 Way Airflow with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 15" x 15"] d + Product Details Size – MFRG2420W HP + Product Details Size – 20"w X 50"h is the size for the duct opening measurement only Use appropriate fittings and avoid using excessive force when tightening connections Always measure the actual opening in your ceiling or wall accordion title { font size: 18px