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Some flexible duct markets prefer to avoid using flexible duct on the return air portions of HVAC systems, however flexible duct can tolerate moderate negative pressures. The UL181 test requires a negative pressure of 200 Pa. To use flexible ducting in a system, make sure to pull the duct tight so you get the full internal diameter.
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Liquidtight flexible metal conduit (LFMC) is a metallic flexible conduit covered by a waterproof plastic coating. The interior is similar to FMC. The interior is similar to FMC. Flexible metallic tubing ( FMT ; North America ) is not the same as flexible metallic conduit (FMC) which is described in US National Electrical Code (NEC) Article 348.
The product data submittal usually consists of the manufacturer's product information. The information included in this submittal are: Manufacturer, trade name, model or type number and quantities: This information is necessary to compare the submitted item with the specified products and acceptable products listed, in the specification and addenda.
ATCO Electric Yukon, formerly Yukon Electrical Company Limited (YECL), is a private electrical utility based in Whitehorse, Yukon, serving most Yukon communities and Lower Post, British Columbia. The company, founded in 1901, is owned by ATCO of Alberta. Through mergers and acquisitions, Yukon Electrical extended to serve most communities in Yukon.
Ronald Donald Southern, [1] CC CBE AOE (July 25, 1930 – January 21, 2016) was a Canadian businessman. He was the founder and chairman of Calgary-based ATCO Group, and the founder of the Spruce Meadows equestrian centre.
From the posterior wall of the saccule a canal, the endolymphatic duct, is given off; this duct is joined by the ductus utriculosaccularis, and then passes along the aquaeductus vestibuli and ends in a blind pouch (endolymphatic sac) on the posterior surface of the petrous portion of the temporal bone, where it is in contact with the dura mater.
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