Nashua Tapes Products 557 PREMIUM DUCT TAPE - UL181B-FX LISTED Premium performance duct tape specially engineered for flex duct systems (PRINTED). Applications Acts as a superior closure system for use with flexible air ducts and air connectors. Recommended for use on UL list flexible air ducts in accordance with manufacturers' installation instructions. For use in heating, air conditioning, ventilating and refrigeration applications. Suitable for bonding, protecting, holding, repairing, and patching. Features & Benefits UL 181B-FX listed product - The Underwriters Laboratories, Inc. for closure systems for use with flexible air ducts and air closures. Possesses excellent shear properties. Superior quality, performance, and tensile strength. Shows excellent resistance to mold growth, humidity, flame spread, smoke generation, and the effects of high temperatures. Manufactured by the leader, recognized by the professional contractor in the HVAC industry.

Polyken 557 PREMIUM DUCT TAPE - UL181B-FX LISTED Premium performance duct tape specially engineered for flex duct systems (PRINTED). Applications Acts as a superior closure system for use with flexible air ducts and air connectors. Recommended for use on UL list flexible air ducts in accordance with manufacturers' installation instructions. For use in heating, air conditioning, ventilating and refrigeration applications. Suitable for bonding, protecting, holding, repairing, and patching. Features & Benefits UL 181B-FX listed product - The Underwriters Laboratories, Inc. for closure systems for use with flexible air ducts and air closures. Possesses excellent shear properties. Superior quality, performance, and tensile strength. Shows excellent resistance to mold growth, humidity, flame spread, smoke generation, and the effects of high temperatures. Manufactured by the leader, recognized by the professional contractor in the HVAC industry.