+ Product Spec Sheet Outdoor Louver Spec Sheet
actual front end outer dimensions are approximately 22 5/8" width X 12 5/8" height
+ Product Details Size – 12" x 24" or 24" x 12" is the size for the duct opening measurement only
See our separate listing for Butterfly Dmaper to Control Airflow
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6" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling white + Product Spec Sheet Outdoor+ Product Details Size 6"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 875" width X 6" height. High Quality High quality steel construction, no scuff powder coat durable finish, smooth, shiny, scratch resistant, no sharp edges, 2 recessed screw holes on each side with screws included, screws same color as vent cover, easy installation. Adjustable airflow control Adjustable airflow