Description
34"W X 10"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 35.75"W X 11.75"H] 18" Diameter Design – Unrestricted airflow for Grille We carry sizes the 1448FLRSTRT Design – Unrestricted airflow for your HVAC system adjustable one way louver with full horizontal airflow directional control single deflection supply grill with 96% airflow noise free components no vibrating louvers etc + Product Details Size 28"w X 20"h is the size for the duct opening measurement only