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air conditioning filters, furnace filters, electrostatic, registers, grilles, diffusers, vents, grills, wood, brass, cast iron, heat pump, rooftop, electric heaters, oil, gas, chimney, flue pipe, dampers, thermostats, smoke detectors, tools, duct, water heating coils, fans, blowers, attic fans, flexible duct, insulated duct,humidifiers, roof vents, pipe, vav, variable air boxes, exterior aluminum louvers, stainless steel grilles and registers,trion meets ul specification yyxs-yyxs7 ul file # mh27669 nyc,dept of buildings mea 288-01-e and 88-99-e
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