Flexible Duct - Insulated

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1M

Type 1M Acoustical Flexible Duct Insulated

Construction Features

The Flexmaster U.S.A.® Type 1M is manufactured to meet the highest quality standards in strength, permeability and fire resistance required in a flexible duct. Tested to UL standard 181, this Class 1 Air Duct is fabricated with an acoustically transparent PE inner film which allows mid-range sound energy to penetrate the duct wall.

Duct Fabric

A Polyethylene fabric, mechanically locked to the duct helix without the use of adhesives.

Duct Helix

Made from corrosive resistant galvanized steel, the duct helix is mechanically formed to attach the duct fabric without the use of adhesives.

Vapor Barrier

Fire retardant, reinforced aluminum material. Excellent strength at low temperatures. Will not age harden.

Insulation

Fiberglass insulation jacket, factory wrapped.

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