Devola 3kW Over Door Air Curtain White - DVSH3000WH. The DVSH3000WH is an exemplary 3kW air curtain designed to condition incoming air and reduce the amount of warm air escaping. The optimum 3kW output is better than most models on the market, however, it can also be used at half of its capacity (1.5 kW), if required, to save on energy costs.
eBay