18"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 19.75"w x 25.75"h] w10h10 Actual Filter Size – 33 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
Actual Filter Size – 33 3/4"w x 15 3/4" x 1"
Actual Filter Size – 11 3/4"w x 31 3/4" x 1"
+ Product Details Size – 30"w X 36"h is the size for the duct opening measurement only
rated at R3
actual front end outer dimensions are approximately 30 5/8" width X 20 5/8" height
18"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 19.75"w x 25.75"h] w10h10 Actual Filter Size – 33 4 X 12 Is CRFG2028 Width_14in Actual Filter Size – 33 3 4"w x 15 3 4" x 1" Actual Filter Size – 11 3 4"w x 31 3 4" x 1"