Ductwork - Trunk and Branch Lines

Trunk & Branch Lines

Product availability is subject to change without notice. Not all products are available from all facilities.

Metal Pipe

Round Pipe

Master Flow Round Pipe is available in a variety of common lengths, diameters and gauges to help you make your next HVAC project a success. Round pipe can be used as a main trunk line or branch line, as well as in return air situations. A simple snap lock design and sturdy galvanized steel construction on Master Flow pipe creates a quick and secure installation that you can rely on.

  • Easy to install snap lock design
  • Crimped end for a secure interlocking fit
  • Made of galvanized steel for strength and durability
  • Seal & Insulate ductwork for system efficiency and comfort

Rectangular Duct

Rectangular Duct

Master Flow's sturdy Rectangular Duct is used as the main trunk lines in HVAC supply systems. Two L sections snap together to form the rectangular duct section.

  • Sections easily snap together with no tools necessary
  • Can be cut to needed length win simple tin snips
  • Notched corners for easily connecting sections, or use cleats
  • Seal & Insulate ductwork for system efficiency and comfort

Professional Installation
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Product Pricing and Where to Buy