Double Wall Sheet Metal Duct

Langdon fabricates double wall ductwork with an inner perforated metal liner and fittings with an inner solid metal liner.

Double wall sheet metal duct. Double wall duct has a complete line of compatible fittings. Manufactures double wall fittings in most sizes and configurations. Double wall pipe and fittings with e z flange and barrel clamp or standard slip connection sheet metal connectors inc. Doublewall spiral pipe and fittings for commercial and industrial hvac ductwork.

Double wall duct is constructed with an insulation layer between a solid metal outer shell and either a perforated or solid metal inner shell. 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. Double wall fittings can be fabricated to desired length and many different configurations. All sizes shall be listed using inside dimensions.

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. Double wall round spiral duct and fittings are one part of our complete line of hvac products. Sheet metal connectors inc. Fittings can be fabricated with standing seam elbow lock or welded seam construction.

Sheet metal connectors inc. Also available is acrylic coated insulation that resists air erosion of fibers and the growth of fungus and bacteria.