24" X 24" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 10" Diameter actual front end outer dimensions

actual front end outer dimensions are approximately 24 5/8" width X 31 5/8" height

And is classified as Class 1 Fire Proof - B1

High quality – high quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

+ Product Details Size - 18"w X 10"h is the size for the duct opening measurement only

Actual Filter Size – 19 3/4"w x 33 3/4" x 1"

24" X 24" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 10" Diameter actual front end outer dimensions+ Product Details Size 24"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 875" width X 26" 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