actual front end outer dimensions are approximately 26 5/8" width X 30 5/8" height
High Quality – Rigid aluminum construction with counter-sunk screw holes (screws included) and no sharp edges
+ Product Details Size - 22"w X 36"h is the size for the duct opening measurement only
Actual Filter Size – 35 3/4"w x 23 3/4" x 1"
+ Product Details Size – 14"w X 18"h is the size for the duct opening measurement only
20" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w25h25 actual front end outer dimensions+ Product Details Size 20"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" width X 13. 75" 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