8"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - Brown [Outer Dimensions 9.75"w x 9.75"h] 14in diameter + Product Details Size - Ducting Components RG2016 FBA-HP Applications The C box

+ Product Details Size - 10"w X 14"h X 2"d (for duct opening measurement only)

+ Product Details Size – 8"w X 8"h is the size for the duct opening measurement only

Actual Front End Outer Dimensions Are 16" Width X 5" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

actual front end outer dimensions are approximately 31

+ Product Details Size – 8" x 16" or 16" x 8" is the size for the duct opening measurement only

8"w X 8"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh Brown [Outer Dimensions 9.75"w x 9.75"h] 14in diameter + Product Details Size Ducting Components RG2016 FBA HP Applications The C box + Product Details Size 10"w X 14"h X 2"d (for duct opening measurement only) + Product Details Size – 8"w X 8"h is the size for the duct opening measurement only