28"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 29.875"W X 15.875"H] w36h36 Adjustable airflow control - by Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Adjustable airflow control - by rotating the middle disk

actual front end outer dimensions are approximately 10 5/8" width X 8 5/8" height

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 32" or 32" x 6" duct opening (measured at the opening)

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

28"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 29.875"W X 15.875"H] w36h36 Adjustable airflow control by Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Adjustable airflow control by rotating the middle disk actual front end outer dimensions are approximately 10 5 8" width X 8 5 8" height