16" X 6" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Ceiling Solid Base Construction – Features

Solid Base Construction – Features a solid base for stable installation and reliable protection

+ Product Details Size – 18"w X 30"h is the size for the duct opening measurement only

Actual Filter Size – 21 3/4"w x 19 3/4" x 1"

By simply measuring the width or the length of the vent

+ Product Details Size - 36"w X 22"h is the size for the duct opening measurement only

16" X 6" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Ceiling Solid Base Construction – Features+ Product Details Size 16"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 875" width X 8" 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