12" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w6h6 + Product Details Size –

+ Product Details Size – 26"w X 26"h is the size for the duct opening measurement only

this grille offers a seamless blend of functionality and aesthetics

Designed for a 1" thick filter

+ Product Details Size – 36"w X 14"h is the size for the duct opening measurement only

12" X 12" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w6h6 + Product Details Size –+ Product Details Size 12"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 875" width X 14" 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