16" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 12in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 12 5/8" width X 18 5/8" height

Actual Filter Size – 25 3/4"w x 23 3/4" x 1"

Installation – Easy to Install

actual front end outer dimensions are approximately 22 5/8" width X 52 5/8" height

One Towards The Top Of The Door

16" X 4" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling 12in diameter actual front end outer dimensions+ Product Details Size 16"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 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