ATCO-FLEX

flexible ventilating ducts of metal and sheet metal collars and fittings being structural parts therefor, for heating and ventilation use in residential and commercial buildings, and not including marine, automotive, and appliance usage

register boxes, namely, heat, ventilation, and air conditioning registers; air diffusers for building heating and air conditioning installations, all for heating and ventilation use in residential and commercial buildings, and not including marine, automotive and appliance usage

flexible non-metal ventilating ducts, for heating and ventilation use in residential and commercial buildings, and not including marine, automotive, and appliance usage