12"W X 30"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 13.75"W X 31.75"H] 10in diameter Actual Filter Size – 33 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
Actual Filter Size – 33 3/4"w x 33 3/4" x 1"
Actual Front End Outer Dimensions Are 11
+ Product Details Size - 12"w X 16"h X 2"d (for duct opening measurement only)
+ Product Details Size – 16"w X 32"h is the size for the duct opening measurement only
and then smoothly drop in the grill
12"W X 30"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 13.75"W X 31.75"H] 10in diameter Actual Filter Size – 33 4 X 12 Is CRFG2028 Width_14in Actual Filter Size – 33 3 4"w x 33 3 4" x 1" Actual Front End Outer Dimensions Are 11