36"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 37.75"w x 31.75"h] Material_Steel For 6" Round Duct Opening RGADJ-3012 7" Round Duct Pipe Quality Packaging carefully packaged

For 6" Round Duct Opening - Spiral or Flex

+ Product Details Size – 32" x 32" is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 16" or 16" x 6" duct opening (measured at the opening)

actual front end outer dimensions are approximately 8

36"w X 30"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 37.75"w x 31.75"h] Material_Steel For 6" Round Duct Opening RGADJ 3012 7" Round Duct Pipe Quality Packaging carefully packaged For 6" Round Duct Opening Spiral or Flex + Product Details Size – 32" x 32" is the size for the duct opening measurement only