22"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 27.75"h] 12in diameter The powder-coated finish ensures a Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

The powder-coated finish ensures a sleek look while protecting the grille from wear and tear

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 10" OR 10" x 28" duct opening (measured at the opening)

Actual Filter Size – 23 3/4"w x 21 3/4" x 1"

actual front end outer dimensions are approximately 16 5/8" width X 12 5/8" height

+ Product Details Size – 18"w X 20"h is the size for the duct opening measurement only

22"w X 26"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 23.75"w x 27.75"h] 12in diameter The powder coated finish ensures a Compatible With Duct 7in Applications This sheet metal DDAG A 1212 The powder coated finish ensures a sleek look while protecting the grille from wear and tear + Product Details Perfect Fit & Easy Sizing Designed for a 28" x 10" OR 10" x 28" duct opening (measured at the opening)