30"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 19.75"h] Powder Coated our Radial Damper simplifies the Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

our Radial Damper simplifies the process of managing airflow

actual front end outer dimensions are approximately 27 5/8" width X 38 5/8" height

+ Product Details Size - 32"w X 36"h is the size for the duct opening measurement only

These are airflow control components made to connect to supply grilles of the drop ceiling

actual front end outer dimensions are approximately 30 5/8" width X 26 5/8" height

30"w X 18"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 31.75"w x 19.75"h] Powder Coated our Radial Damper simplifies the Compatible With Duct 7in Applications This sheet metal DDAG A 1212 our Radial Damper simplifies the process of managing airflow actual front end outer dimensions are approximately 27 5 8" width X 38 5 8" height