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About Sandwich Style Insulated Round Duct
Sandwich Style Insulated Round Duct, Rectangular, Door Width 12-1/2 In., Door Height 8-9/16 In., Duct Diameter 19 In. to 20 In., Material Steel, Finish Galvanized, Rough Opening Width 11-11/16 In., Rough Opening Height 7-5/8 In., Temp. Range 200 Degrees F max., Hinges None, Standards SMACNA, Includes InsulatedSpecification: Door Width: 12-1/2"Standards: SMACNADoor Height: 8-9/16"Finish: GalvanizedDuct Radius: 19" to 20"Item: Sandwich Style Insulated Round DuctIncludes: InsulatedHinges: NoneShape: RectangularTemp. Range: 200 Degrees F max.Rough Opening Height: 7-5/8"Rough Opening Width: 11-11/16"Material: Steel
