8"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 9.75"w x 29.75"h] sidewall Design – Circular air supply Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Design – Circular air supply valves - designed to be used in low and medium pressure ventilation air conditioning systems

+ Product Details Size - 28"w X 24"h is the size for the duct opening measurement only

Ideal for Walls & Ceilings: Designed for seamless installation in standard 24" X 10" duct openings

Strong aluminum frame & cube core that never rusts

875" width X 9

8"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 9.75"w x 29.75"h] sidewall Design – Circular air supply Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Design – Circular air supply valves designed to be used in low and medium pressure ventilation air conditioning systems + Product Details Size 28"w X 24"h is the size for the duct opening measurement only