30" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling return filter 7/8" - 3397 PSI

7/8" - 3397 PSI

Actual Filter Size – 29 3/4"w x 9 3/4" x 1"

Actual Filter Size – 9 3/4"w x 17 3/4" x 1"

actual front end outer dimensions are approximately 20 5/8" width X 34 5/8" height

30" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling return filter 7/8" - 3397 PSI+ Product Details Size 30"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 875" width X 6" 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