All steel wire is applied between PET surfaces to prevent corrosion (oxidization)
actual front end outer dimensions are approximately 30 5/8" width X 18 5/8" height
rust-free aluminum construction with smooth finished edges and counter-sunk screw holes (screws included)
Easy Installation – Complete set of sponge gasket and mounting frame included
+ Product Details Size – 6" x 12" or 12" x 6" is the size for the duct opening measurement only
30" X 6" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling w10h10 All steel wire is applied+ Product Details Size 30"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 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