BASICS

Registers, grilles and diffusers for air distribution systems sold in a wholesale manner; manual air volume dampers sold in a wholesale manner; control grids and baffles for use with registers, grilles and diffusers for air distribution systems sold in a wholesale manner; air conditioning and furnace accessories, namely, baseboard and floor registers, side wall registers, ventilating registers, ceiling diffusers, and perimeter diffusers sold in a wholesale manner; commercial registers and grilles used in heating and air conditioning systems sold in a wholesale manner; dampers sold in a wholesale manner; damper kits comprising damper bearings, counterweights, chain, chain coupling and chain lock; manual damper regulators and regulator sets comprising chain, pulleys, hooks and screws packaged together sold in a wholesale manner; ventilation systems comprising gas vent pipes and chimneys sold in a wholesale manner; flexible duct primarily of nonmetal for use with air distribution systems sold in a wholesale manner; and metal air duct fittings for use with air distributions systems sold in a wholesale manner