12" x 12" [Duct Opening] Flat Plaque Aluminum Ceiling Supply Diffuser Duct Cover with Lever-Operated Damper for Air Flow Control [Outer Dimensions: 15" x 15"] R-6.0 insulation Actual Filter Size – 23 Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

Actual Filter Size – 23 3/4"w x 11 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 32" OR 32" X 16" duct opening (measured at the opening)

Enhanced functionality comes with leather-lined side loops

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 26" OR 26" x 32" duct opening (measured at the opening)

12" x 12" [Duct Opening] Flat Plaque Aluminum Ceiling Supply Diffuser Duct Cover with Lever Operated Damper for Air Flow Control [Outer Dimensions: 15" x 15"] R 6.0 insulation Actual Filter Size – 23 Compatible With Duct 7in Applications This sheet metal DDAG A 1212 Actual Filter Size – 23 3 4"w x 11 3 4" x 1" + Product Details Perfect Fit & Easy Sizing Designed for a 16" x 32" OR 32" X 16" duct opening (measured at the opening)