Once the dust settles from our recent move, we will be adding the production of flat oval duct by early April, 2014. Oval duct is used when space restrictions prohibit the use of round duct. MKT will offer flat oval duct in spiral lockseam and longitudinal seam constructions and use the same techniques used to make round duct. 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.