20" X 10" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Grilles + Product Details Size –

+ Product Details Size – 24"w X 30"h is the size for the duct opening measurement only

Actual Filter Size – 17 3/4"w x 7 3/4" x 1"

Actual Filter Size – 29 3/4"w x 23 3/4" x 1"

+ How To Measure A Grille

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20" X 10" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Grilles + Product Details Size –+ Product Details Size 20"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 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