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Brands of the Masterflex Group:
Spiral hoses & connection systems for all industrial applications
Vulcanised moulded parts & hoses for aerospace & special industrial applications
Smooth hoses & profiles for industry & medical technology
Injection moulding & mounting parts for medical technology
Spiral hoses & specialist HVAC hose systems
Today, the Flexmaster U.S.A.® Return Air Kits are the perfect solution for all your attenuation needs in return air and transfer air ducts.
Substantially less expensive than internally lined sheet metal ductwork, the Flexmaster U.S.A.® Return Air Kits provide a superior acoustical solution in an easy to install flexible duct kit.
The Flexmaster U.S.A.® Flexible Return Air Kits are manufactured to meet the highest quality standards in strength, permeability and fire resistance required in a flexible air duct. This insulated, ETL Class 1 AIR DUCT is fabricated with an acoustical liner which allows sound energy to penetrate the duct wall. All Flexible Duct Kit Assemblies adhere to UL STD 181 attachment requirements for flexible duct to sheet metal collars.
Acoustical Return Air Kit Drawing
Return Air Kit Type 1 Submittal Data Sheet
Return Air Kit Type 6 Submittal Data Sheet