LASER-CUT SAFETY FITTINGS

Metal vent cover for HVAC ducts; metal construction materials, namely, exhaust vent hoses for external ventilation of furnaces, heaters, stoves and boilers; metal heating ducts; ducts and pipes of metal for central heating installations; ducts of metal for air-conditioning installations; ducts of metal for ventilating installations; metal register boxes; metal diffuser boxes; metal pipe fittings for compressed air pipes