30" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling return filter Actual Filter Size – 33

Actual Filter Size – 33 3/4"w x 15 3/4" x 1"

Actual Front End Outer Dimensions Are 34" Width X 10" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

1/4" - 6518 PSI

this flex duct decreases the pressure loss and provides a more hygienic environment

30" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling return filter Actual Filter Size – 33+ 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