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 + Product Details Perfect Fit SV2414 HP Product Details Perfect Fit 12" Round Duct Pipe

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

+ Product Details Size & Compatibility – The 12" galvanized steel metal stick on take-off is compatible with duct 12"

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+ Product Details Size - 10"w X 10"h Is The Size For The Duct Opening Only

75"H – fits a 12" X 8" duct 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 + Product Details Perfect Fit SV2414 HP Product Details Perfect Fit 12" Round Duct Pipe + Product Details Perfect Fit & Easy Sizing Designed for a 16" x 32" OR 32" X 16" duct opening (measured at the opening) + Product Details Size & Compatibility – The 12" galvanized steel metal stick on take off is compatible with duct 12"