Single-Wall, Flat Oval Duct
For applications in which space restrictions prohibit the use of round duct, McGill AirFlow offers flat oval duct in spiral lockseam and longitudinal seam constructions. Flat oval duct provides a more efficient alternative to rectangular duct in these applications. McGill AirFlow manufactures flat oval duct with the same techniques used to make round duct. As a result, flat oval duct shares many of the performance characteristics of round duct. Compared with rectangular duct, it provides lower installation costs and, because of reduced leakage and pressure loss, lower operating costs.
Spiral lockseam duct is constructed with an interlocking helical seam that runs the length of the duct. As with round spiral lockseam duct, the flat oval type combines efficient performance with a structural strength equal to that of heavier gauges of other types of duct.
Flat oval duct is available with a longitudinal seam construction for applications that require very heavy gauges or large sizes. The duct's longitudinal seam is solid welded.
A pipelock construction is used for some lighter gauge duct (residential and light commercial) and some PVC-coated metal duct.
Flat Oval Duct
(1) Some standard sizes of flat oval Uni-Seal duct are available only to lengths of 6 feet; longer lengths are available on special order. Standard lengths of flat oval longitudinal seam duct are 5 and 6 feet.
(2) Single-wall, flat oval duct is also available in nongalvanized carbon steel and paintable galvanized steel. Stainless steel is generally type 304 or 316. Aluminum is generally type 3003-H14. Uni-Coat® single-wall, flat oval duct (polyvinyl-chloride-coated galvanized steel) is available on special order.
(3) SilverGuard™ single-wall, flat oval duct (pre-coated with an antimicrobial) is available on special order.
Flat Oval Duct
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