30"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 25.75"h] Aluminum Bar High Quality Copper Coil Meets/Beats Compatible with Duct 4" Product Details Size 32 LO246

High Quality Copper Coil Meets/Beats ASTM B280 Standard for Air Conditioning and Refrigeration (Made From C12200 - 99

actual front end outer dimensions are approximately 21 5/8" width X 33 5/8" height

+ Product Details Size - 24"w X 22"h is the size for the duct opening measurement only

And The Cooler Air From Outside WIll Flow In From The Bottom

For 8" duct opening

30"w X 24"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 31.75"w x 25.75"h] Aluminum Bar High Quality Copper Coil Meets Beats Compatible with Duct 4" Product Details Size 32 LO246 High Quality Copper Coil Meets Beats ASTM B280 Standard for Air Conditioning and Refrigeration (Made From C12200 99 actual front end outer dimensions are approximately 21 5 8" width X 33 5 8" height