16"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Black [Outer Dimensions 17.75"w x 17.75"h] Color_Red Oak Actual Filter Size – 33 Product Details Perfect Fit Color_Anodized Aluminum AD-P-001-18x18

Actual Filter Size – 33 3/4"w x 27 3/4" x 1"

+ Product Details Size – 34"w X 10"h is the size for the duct opening measurement only

Heavy Gauge Steel – Heavier gauge than needed

+ Product Details Size - 34"w X 14"h is the size for the duct opening measurement only

Our filter grille latch is easy to use on your fingers and requires no screwdriver to open

16"w X 16"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh Black [Outer Dimensions 17.75"w x 17.75"h] Color_Red Oak Actual Filter Size – 33 Product Details Perfect Fit Color_Anodized Aluminum AD P 001 18x18 Actual Filter Size – 33 3 4"w x 27 3 4" x 1" + Product Details Size – 34"w X 10"h is the size for the duct opening measurement only