PROVENT

Metal security bars for use on commercial and residential window openings; Parts and fittings to be used with HVAC systems, namely, metal roof curbs, adjustable metal roof curbs, metal isolation rails, and metal coils

Electronic sensors and controllers for use with HVAC systems

Parts and fittings to be used with HVAC systems, namely, air filters, filter racks, protective coil guards, motorized power exhaust fans, air side economizers, and mixing boxes for use in air handling units