Double Wall Sheet Metal Duct

Double wall fittings are manufactured on our state of the art fabrication equipment.

Double wall sheet metal duct.

Also available is acrylic coated insulation that resists air erosion of fibers and the growth of fungus and bacteria. Sheet metal connectors inc. Doublewall spiral pipe and fittings for commercial and industrial hvac ductwork. Double wall fittings can be fabricated to desired length and many different configurations.

Fittings can be fabricated with standing seam elbow lock or welded seam construction. Double wall duct has a complete line of compatible fittings. Double wall pipe and fittings with e z flange and barrel clamp or standard slip connection sheet metal connectors inc. All sizes shall be listed using inside dimensions.

Double wall duct is constructed with an insulation layer between a solid metal outer shell and either a perforated or solid metal inner shell. Manufactures double wall fittings in most sizes and configurations. Sheet metal connectors inc. Acoustical double wall duct is built with a solid outer shell and a perforated inner shell to effectively reduce system noise while thermal control double wall is built with solid inner and outer shells for assured thermal conductivity and vapor barrier integrity.

All double wall fittings are fabricated with stiffening beads on duct sizes 19 wide and larger which have more than 10 square feet of unbraced panel. Langdon fabricates double wall ductwork with an inner perforated metal liner and fittings with an inner solid metal liner.