Double Wall Insulated Ducting

Double wall duct is manufactured completely assembled with tdc corners installed.

Double wall insulated ducting.

Thermal double wall duct for temperature control. Factory built for high quality durability and long life. Grease duct systems for commercial kitchen s cooking areas. Double wall duct and fittings will consist of a perforated or solid inner liner 1 thick x 1 0 lb ft layer of glass fiber insulation and a solid outer pressure shell.

Sealant is available in the seams upon request. Conical kl silicone and gasket free joining push fit systems. Stainless steel inner wall construction for superior strength over traditional materials used. 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.

Double wall duct is fabricated with either snap lock or pittsburgh longitudinal seams. They are constructed of a solid sheet met al outer pressure shell and a sheet metal inner liner with a layer of insu lation sandwiched between. The insulation is protected from external damage a critical concern for ductwork on rooftops and out of the building envelope. Biyang double wall spiral duct is made of big spiral duct outside insulation in the middle and small spiral duct inside.

Straight double wall duct comes standard with stiffening beads. Outer wall options of stainless or paintable aluminized steel. Where ducts are exposed to view insulation is concealed for a more. Double wall insulated round ducts.

Double wall rectangular ducts utilize the same outer metal shell and insulation media as our internally lined rectangular ducts but have an additional metal inner shell between the insulation and the airstream. Overall interior insulation duct liners perform well in terms of thermal efficiency and noise reduction. When a perforated inner liner is specified a retaining fabric must be wrapped between the perforated inner and the glass fiber insulation. This provides some additional characteristic to the duct as well as allowing a few more insulation.

Models ps and ips are double wall modular prefabricated venting systems features benefits. Double wall exhaust systems insulated exhaust systems made of stainless steel. Spiral manufacturing offers standard solutions but we have the flexibility to meet your special needs. It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications.

Double wall insulated duct and fittings mcgill airflow corporation s double wall insulated duct and fittings pro vide exceptional noise and thermal control in air handling systems. In double wall round spiral duct a metal inner liner insures that high airflow velocities cannot separate insulation by pulling away from the duct s outer wall and.