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  1. Rectangular Ductwork | McMaster-Carr

    Maximize the space in close quarters, such as inside walls and ceilings. As rectangular duct sizes increase, they get wider but not taller. This shape is most often used for heating and cooling inside …

  2. Rectangle HVAC Duct & Fittings at Lowes.com

    Maximize your heating, ventilating and air-conditioning (HVAC) system’s efficiency and maintain consistent comfort in your home with quality HVAC duct and fittings from Lowe’s.

  3. 16 in. x 8 in. x 4 ft. Half Section Rectangular Duct

    The notched corners interlock when two half sections are joined together to form a full duct section. This helps align the pieces for a secure connection, whether you choose to further secure them with …

  4. Rectangular Duct Fittings Catalog | Sheet Metal Connectors

    Sheet Metal Connectors, Inc. (SMC) TDC, Slip/Drive and Raw Sheet Metal Connectors, Inc. rectangular duct and fittings are one part of our complete line of HVAC products. SMC manufactures coil line …

  5. Rectangular Duct – Galvanized, Aluminum & Stainless Steel

    Shop rectangular duct in galvanized, aluminum, and stainless steel. Custom sizes, fast shipping, and factory direct pricing from Duct2Go.

  6. GAF | Master Flow® Rectangular Ducts

    Master Flow® Rectangular Ducts are used as the main trunk lines in HVAC supply systems. Get the details here.

  7. Rectangular Ductwork Systems | Pro-R

    Pro-R Rectangle ductwork is your lightweight, durable, and easy-to-install solution for both outdoor and indoor applications. Pro-R is a patented, strong, pre-assembled, lightweight, and high performance …