Devola Platinum 4kW PTC Over Door Air Curtain (with Remote Control) - DVSH40WH The DVSH40WH is an exemplary 4kW air curtain designed to condition incoming air and reduce the amount of warm air escaping. It is ideally situated above shop doorways, conservatories and business reception areas. It is also suitable for domestic use in areas where you would want to minimalize heat loss or temperature fluctuations, when a door is frequently in use. The optimum 3kW output is better than most models on the market, however, it can also be used at half of its capacity (2kW), if required, to save on energy costs. In half power mode the unit will still circulate a generous heat distribution around the space. Boasting state of the art PTC heating technology, which provides safe, energy efficient and powerful heat distribution. The housing of the unit is premium quality steel designed to be durable for it’s frequent everyday use. The air curtain is very quiet in oper