22"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 23.75"w x 21.75"h] 3-Way or 4-Way Installing the plaster frame is Ducting Components RG2016 FBA-HP Applications The C box

Installing the plaster frame is effortless – secure it into your sheetrock

During summer

actual front end outer dimensions are approximately 24 5/8" width X 32 5/8" height

+ Product Details Size – 28"w X 10"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 8" OR 8" x 28" duct opening (measured at the opening)

22"w X 20"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 23.75"w x 21.75"h] 3 Way or 4 Way Installing the plaster frame is Ducting Components RG2016 FBA HP Applications The C box Installing the plaster frame is effortless – secure it into your sheetrock During summer