Profile: B&R Enclosures is a manufacturer of electrical enclosures, switchboard building systems, racks and cabinets. Polynova is a range of modular thermoplastic enclosures designed to house terminations and electrical components in individual boxes, or assembled into mini banks for low voltage control & distribution applications. It is provided with stainless steel cover screws to prevent corrosion. Enclosures and lids are opaque and transparent. They are subjected to UV stabilization process. Our wall or door mounted air-air heat exchangers are designed to cool electrical enclosures to prevent failure of electrical equipment. Our units extract hot air from the top of the enclosure, cool it through heat exchange surfaces, and then expel it in a low pressure jet towards the bottom of the enclosure.