actual front end outer dimensions are approximately 38 5/8" width X 36 5/8" height
+ Product Details Size - 8"w X 16"h is the size for the duct opening measurement only
actual front end outer dimensions are approximately 18 5/8" width X 27 5/8" height
Installation – Easy drop ceiling installation
+ Product Details Size – 10"w X 34"h is the size for the duct opening measurement only
24" X 10" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Compatible with Duct 6" actual front end outer dimensions+ Product Details Size 24"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 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