30"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace - Weather-Resistant Air Grille with Screen Mesh - [Outer Dimensions 31.75"w x 29.75"h] return filter 14" Diameter Is The Size Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

14" Diameter Is The Size For The Duct Opening Measurement Only

With its reliable construction and sleek design

Actual Filter Size – 13 3/4"w x 19 3/4" x 1"

+ Product Details Size - 28"w X 30"h is the size for the duct opening measurement only

+ Product Details Size - 26"w X 16"h X 2"d (for duct opening measurement only)

30"w X 28"h Aluminum Exterior Gable Louver Vent for Walls & Crawlspace Weather Resistant Air Grille with Screen Mesh [Outer Dimensions 31.75"w x 29.75"h] return filter 14" Diameter Is The Size Compatible With Duct 7in Applications This sheet metal DDAG A 1212 14" Diameter Is The Size For The Duct Opening Measurement Only With its reliable construction and sleek design