flat-roof drain DrainBox DN75 vertical with insulated drain body, telescoped outer-housing for precise adjustment to insulations from 100 - 160 mm, bitumen membrane d 500 mm for perfect and easy lap-joint waterproofing with bituminous membranes, self-regulating heating element 10 - 30 W / 230 V) and domed plastic grate d 180 mm. Comes with lot cover.