Duct Solutions

Duct Systems for Every Need

Spiral Duct Schematic at UofL Arena

At Allied Technologies, we provide a variety of duct systems to meet the demands of commercial and industrial projects. We offer ductwork in Galvanized, 304 & 316 Stainless Steel, Aluminum, PVC-coated, and Carbon Steel. Our duct systems range from 4 inches to 100 inches in diameter, ensuring we can accommodate projects of all sizes.

We also offer Metal-Fab grease ducts as well as Boiler Flue systems (B-vent, Corr/Guard) and Pressure Industrial Chimney systems (PIC, IPIC), providing comprehensive solutions for your ductwork needs.

Spiral Ductwork

Allied Technologies is the largest supplier of factory-fabricated spiral duct systems in Kentucky, providing over 1,000,000 pounds of single—and dual-wall spiral duct each year through our partnership with Eastern Sheet Metal. We offer low-pressure systems with up to one inch of static pressure and high-pressure systems with up to ten inches of static pressure.

Notable installations of Metal Fab’s grease duct include the KFC Yum Center, which included 16 separate systems ranging from 10 to 22 inches in diameter, and Churchill Downs, the University of Louisville, and Papa John’s Stadium.

Grease Ducts

In compliance with ASTM E 2336, which was updated on January 1, 2009, we offer Metal Fab's UL-listed G-Value grease ducts that require no wrap and feature a zero clearance to combustible rating. These systems meet Kentucky state requirements as per IMC 2006, and Allied Technologies can assist with state approvals.