8" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 10" Round Duct Pipe Actual Filter Size – 33

Actual Filter Size – 33 3/4"w x 11 3/4" x 1"

Actual Filter Size – 24 3/4"w x 13 3/4" x 1"

+ Product Details Size – 36"w X 30"h is the size for the duct opening measurement only

Can be hooked up with our "Butterfly Dampers" for precise airflow control

Rigid gauge built for durability and long life in mind

8" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 10" Round Duct Pipe Actual Filter Size – 33+ Product Details Size 8"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 875" width X 10" 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