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model 2000 door construction incorporates modular panel construction with a calcium silicate core, for a 250of temperature rise rating, securely bonded to 20 gauge cold rolled face sheets and 18 guage interior channels. model 1000 door construction incorporates modular panel construction with kraft honeycomb core securely bonded to 20 gauge cold rolled face sheets and 18 gauge interior panels.
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china automatic drive for folding doors, find details about china space saving folding door, sliding door operator from automatic drive for folding doors ningbo farwill automation co., ltd. from the manufacturer: control open and close your garage door from anywhere with your smartphone through the alexa