AirLock 100 is the ultimate solution for this problem:\n\nOnce installed between window and frame with only a few steps and the exhaust air hose end led outside through the hardly opened zip of the AirLock 100, this practical aid henceforth prevents the return flow of warm exhaust air into the room.\n\nSince the translucent AirLock 100 is made of hardwearing and water-repellent material with low specific heat conduction characteristics, you can perceptibly save energy using the AirLock 100, i.e. it pays for itself in next to no time.\n\nUpon leaving the building the windows can be closed without difficulty. There is no need to disassemble the AirLock 100.\n\nNo matter whether with left-hand or right-hand hinge, bottom hung or skylight windows – the AirLock 100 matches all the common window constructions with a maximum perimeter of 400 cm