All Rect. Doublewall 2020欧洲杯盘口

Y Branch

Double wall fittings are manufactured on our state of the art fabrication equipment. 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. This requirement is applicable to 20 gauge or less in thickness and 3” W.G. or less.

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