featuring a 8" round duct opening
+ Product Details Size - 4"w X 18"h is the size for the duct opening measurement only
+ Product Details Size – 22"w X 22"h is the size for the duct opening measurement only
+ Product Description Enhance your ventilation system with our high-quality grilles and registers
Secure Locking Mechanism – Features a permanently attached eight-tumbler lock with a supplied key for added security
14" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling Powder-Coat featuring a 8" round duct+ Product Details Size 14"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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