12" X 10" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Return actual front end outer dimensions

actual front end outer dimensions are approximately 18 5/8" width X 28 5/8" height

+ Product Details Size - 16"w X 12"h is the size for the duct opening measurement only

Actual Filter Size – 27 3/4"w x 27 3/4" x 1"

Actual Filter Size – 23 3/4"w x 15 3/4" x 1"

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12" X 10" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Return actual front end outer dimensions+ Product Details Size 12"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 875" width X 12" 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