12" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Aluminum - Cube Core actual front end outer dimensions

actual front end outer dimensions are approximately 18 5/8" width X 26 5/8" height -

Actual Filter Size – 7 3/4"w x 15 3/4" x 1"

actual front end outer dimensions are approximately 27 5/8" width X 32 5/8" height

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

actual front end outer dimensions are approximately 16 5/8" width X 18 5/8" height

12" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Aluminum - Cube Core actual front end outer dimensions+ Product Details Size 12"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 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