Wall opening locking device for use in building, has material track with opening and closing flap, where track proceeds in bottom flap that is detachably fastened to base area provided before wall opening

摘要

The device has a material track (13) attached to a flank of a wall along limiting edges of a wall opening and detachably fastened to the wall, where the flank surrounds the opening. The track has an opening and closing flap in an area of the opening, whereby the track proceeds in a bottom flap detachably fastened to the base area provided before the wall opening. The closing flap is bounded by a zipper having a slider.