The present invention relates to an elevator shaft enclosure, formed by means of a series of punched plates which can be manually bent and cut so as to adapt them to the elevator shaft and to the dimensions of the door. The enclosure comprises on one of its sides at least two side closure plates, an upper plate and a lower plate, overlapping one another whereas in the upper part the enclosure comprises at least two other upper plates, one on the left and one on the right, also overlapping one another according to the width of the shaft to be covered.