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Round Spiral Duct Work

SET Duct Manufacturing offers round spiral sizes of 4" diameter through 84" diameter which has you covered from the smallest to most of the larger projects. Exposed spiral ductwork has seen growth over the past 10 to 20 years because of it's pleasing looks, airflow efficiency, field labor savings and lightweight construction as compared to rectangular.

All pipe is manufactured with spiral lockseam construction, seam type RL-1, from G60 minimum hot dipped steel meeting ASTM A527. Spiral pipe and fittings are available in stainless steel, aluminum, PCD, galvannealed and aluminized. Dual wall round ductwork is available with a perforated inner wall and with any of the listed material types for the outer wall. A solid inner wall is also available with 1", 2" or 3" insulation thickness.

All of our spiral ductwork is manufactured in our facility. We do not buy, resell and ship in ductwork from hundreds of miles away. Solutions to your questions and delivery requirements are provided and controlled under our roof. We have committed to keeping pipe and standard fittings in stock for sizes up to 24" diameter so that your basic projects can be picked up today. Many of the sales staff began their careers at Foremost when only round spiral ductwork was available. They are considered to be experts with decades of experience behind them. That experience and our complete dedication to quality and service will help your bottom line.

Product Description:

  • Pipe is available in shorter or longer cut lengths
  • Pipe can be corrugated to provide additional strength
  • DuraFlange connections available loose or installed
  • Round and rectangular saddle manifolding is available
  • Cable wire hangers make field installation simple
  • LEED wrapping service is available