Unit for sealing window and door openings in a building wall against flood-water entry, comprises a flat aluminum frame and a stiffened aluminum panel boltable to the frame

摘要

The unit for sealing window and door openings in a building wall against floodwater entry comprises a surrounding flat aluminum frame attached permanently to the building wall and a stiffened aluminum panel boltable to the frame. Both the frame and the panel are provided with special seals.