Double Wall Sheet Metal Duct

Fittings can be fabricated with standing seam elbow lock or welded seam construction.

Double wall sheet metal duct.

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. Manufactures double wall fittings in most sizes and configurations. 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.

Double wall fittings can be fabricated to desired length and many different configurations. Doublewall spiral pipe and fittings for commercial and industrial hvac ductwork. Doublewall spiral pipe catalog specs. Langdon fabricates double wall ductwork with an inner perforated metal liner and fittings with an inner solid metal liner.

Also available is acrylic coated insulation that resists air erosion of fibers and the growth of fungus and bacteria. Double wall duct has a complete line of compatible fittings. Double wall duct is constructed with an insulation layer between a solid metal outer shell and either a perforated or solid metal inner shell. Double wall fittings are manufactured on our state of the art fabrication equipment.

All sizes shall be listed using inside dimensions. Sheet metal connectors inc.