14" x 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Return actual front end outer dimensions

actual front end outer dimensions are approximately 27 5/8" width X 26 5/8" height

with actual outer dimensions of 12

actual front end outer dimensions are approximately 28 5/8" width X 24 5/8" height

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actual front end outer dimensions are approximately 30 5/8" width X 10 5/8" height

14" x 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Return actual front end outer dimensions+ Product Details Size 14"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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