16"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 17.75"w x 7.75"h] Supply Grille + Product Spec Sheet Aluminum Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Spec Sheet Aluminum Return Filter Grille Spec Sheet

+ Product Details Size – 6"w X 10"h is the size for the duct opening measurement only

75" Width X 23

Actual Filter Size – 17 3/4"w x 31 3/4" x 1"

+ Product Details Size – 12"w X 4"h is the size for the duct opening measurement only

16"w X 6"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 17.75"w x 7.75"h] Supply Grille + Product Spec Sheet Aluminum Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Spec Sheet Aluminum Return Filter Grille Spec Sheet + Product Details Size – 6"w X 10"h is the size for the duct opening measurement only