22"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 17.75"h] Adjustable Return actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 14 5/8" width X 16 5/8" height

Can be hooked up with our "Butterfly Dampers" for precise airflow control

Pack of 4 Pieces

actual front end outer dimensions are approximately 36 5/8" width X 26 5/8" height

+ Product Details Size - 20"w X 14"h X 2"d (for duct opening measurement only)

22"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 23.75"w x 17.75"h] Adjustable Return actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 14 5 8" width X 16 5 8" height Can be hooked up with our "Butterfly Dampers" for precise airflow control