18" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER - HVAC Vent Duct Cover Sidewall or Ceiling white High Quality – High quality Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

High Quality – High quality steel construction

+ Product Details Size – 12" X 4" is the size for the duct opening (floor/vent hole) measurement only

actual front end outer dimensions are 13

+ Product Details Size – 28"w X 16"h is the size for the duct opening measurement only

Actual Filter Size – 9 3/4"w x 33 3/4" x 1"

18" X 8" ADJUSTABLE AIR SUPPLY DIFFUSER HVAC Vent Duct Cover Sidewall or Ceiling white High Quality – High quality Compatible With Duct 7in Applications This sheet metal DDAG A 1212 High Quality – High quality steel construction + Product Details Size – 12" X 4" is the size for the duct opening (floor vent hole) measurement only