Double Wall Spiral Duct Specifications

K value is 0 27.

Double wall spiral duct specifications.

1 2 and 3 insulation thicknesses are available. Smc constructs each piece with an inner shell perforated or solid surrounded by a layer of insulation and covered by a solid outer shell. Aluminum double wall flat oval duct and fittings are available in larger sizes and greater metal thicknesses on special order. Dual wall double wall insulated spiral is available with solid or perforated liners.

This requirement is applicable to 20 gauge or less in thickness and 3 w g. Double wall flat oval duct and fittings are also available in carbon steel paintable galvanized steel and a luminized steel. 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. Mylar barrier is available as a barrier between perforated liner and insulation.

Double wall fittings are manufactured on our state of the art fabrication equipment. These holes effectively channel system noise flanking noise and cross talk noise into the insulation layer where it is absorbed. Standard lengths of longitudinal seam k27 duct are 5 and 6 feet. Smc double wall round spiral duct is a dependable erosion resistant alternative to lined round spiral duct providing improved protection for insulation exposed to the airstream.