We are commercial heating and cooling company, Our different dimensions of air curtain are suitable for variable sizes of installation. The wall application is well adopted in commercial and industrial sites. This machine can fit up to 4 meters height and it could perfectly create an air barrier over the doorway to prevent the air move from separate places, and thus to prevent energy loss. Its metal design helps for high-temperature resistance. All ranges provide brushless DC motor options, which is high efficiency and energy-saving solution for the end-users, moreover, the quality and reliable DC options can also provide an extremely low noise environment to the users.