United Mcgill Spiral Duct

We manufacture single wall duct and fittings double wall duct.

United mcgill spiral duct.

This seam increases the duct s structural strength and rigidity so that it can be used in lighter gauges. Standard major axis thickness relationships of duct and fittings fabricated from galvanized paintable galvanized or nongalvanized carbon steel 2 major axis inches duct thickness. Family owned and operated since 1951. The ddf sp duct assembly ranges in length from 16 inches through 20 feet and incorporates.

Pioneered the use of spiral duct and fittings in the 1950s. We also manufacture rectangular ductwork. Both constructions are available in. United mcgill and uni duct.

Today we are a nationwide manufacturer of round and flat oval ductwork used for heating ventilating and air conditioning hvac systems in industrial commercial and public buildings. Round spiral lockseam duct is available in diameters of 3 inches through 84 inches in gauges 28 through 14 and in lengths to 20 feet. Light gauge ribbed spiral lockseam duct with a 23 percent open area 360 venting orifice plate in gauges as noted for the in duct fitting. United mcgill is a registered.

Manufacturer of spiral duct. Over the years we have developed a comprehensive product line that includes duct and high performance fittings designed for a variety of applications. United mcgill and uni duct. Spiral duct and fittings.

Today it is a national business specializing in engineering manufacturing and field installation of many construction products and industrial systems. United mcgill corporation was founded in 1951 as a local sheet metal contractor and steel fabricator. Spiral lockseam duct is constructed with an interlocking helical seam that runs the length of the duct s outer pressure shell. Table 6 mcgill airflow standard construction methods product construction acousti k27 duct spiral lockseam uni rib k27 duct spiral lockseam with standing rib longitudinal seam k27 duct rolled and butt welded acousti k27 fittings1 standard.

We pioneered the manufacture and use of spiral duct and fittings for heating. Longitudinal seam duct is available in diameters of 3 inches through 90 inches and in gauges 22 through 10. United mcgill duct d fuser and mcgill airflow.