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Duct Products
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Round and Oval Duct Fittings


Our duct products are designed to meet your every need. You will get competitive prices for small and colossal jobs alike. You can get specialty fittings to meet your specific dimensions and/or engineering requirements. We can meet your requirements for multiple systems including supply, return, exhaust, underground PVC duct, light material handling, corrosive exhaust and specialty metal duct systems.

When working with us, you have the option of an assortment of joint connections and standard angle rings for both round and oval spiral duct. In addition, you can get a wide variety of ancillary HVAC products, including installed and/or loose access doors, rectangular taps, volume dampers, bellmouths, and much, much more.

For your next duct application, remember “We make it easy” with Round and Oval Duct at SEMCO Duct & Acoustical Products Incorporated.

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Connections

AccuFlange Joint Connections

We offer the AccuFlange duct joining system installed on round and oval duct. AccuFlanges are available for round duct with even sizes from 6" inside diameter to 102" outside diameter. Odd sizes are available from 11" inside diameter to 29" outside diameter. AccuFlanges are available for all flat oval sizes with 6" minor and above and up to a flat span of 108".

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Entire Catalog (5548 kB) pdf
Description: SEMCO's entire duct catalog containing Single Wall, Dual Wall, Round and Oval Duct and Fittings.

Section 1 - General (762 kB) pdf
Description: Section One of SEMCO's duct catalog. Contains Index, Introduction and other general information about SEMCO's duct and fittings.

Section 2 - Single Wall Round (985 kB) pdf
Description: Section Two of SEMCO's duct catalog. Contains Single Wall Round Duct and Fittings plus Industrial Fittings.

Section 3 - Single Wall Oval (729 kB) pdf
Description: Section Three of SEMCO's duct catalog. Contains Single Wall Oval Duct and Fittings.

Section 4 - Dual Wall Round (668 kB) pdf
Description: Section Four of SEMCO's duct catalog. Contains Dual Wall Round Duct and Fittings.

Section 5 - Dual Wall Oval (745 kB) pdf
Description: Section Five of SEMCO's duct catalog. Contains Dual Wall Oval Duct and Fittings.

Section 6 - Miscellaneous (1904 kB) pdf
Description: Section Six of SEMCO's duct catalog. Contains miscellaneous items associated with SEMCO's duct and fittings.
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