32"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 33.75"w x 21.75"h] 18in diameter High Quality – High quality Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

High Quality – High quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

Actual Filter Size – 15 3/4"w x 21 3/4" x 1"

+ Product Details Size - 30"w X 10"h is the size for the duct opening measurement only

+ Product Details Size – 29"w X 22"h is the size for the duct opening measurement only

Contorl Lever To Adjust Louvers According To Season - Complete Open For Summer To Release The Heat

32"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 33.75"w x 21.75"h] 18in diameter High Quality – High quality Compatible With Duct 7in Applications This sheet metal DDAG A 1212 High Quality – High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Actual Filter Size – 15 3 4"w x 21 3 4" x 1"