A long red cedar shingle having a butt thickness of 9?16 in. (1.4 cm). perforated brick (brit.) a brick or block in which holes passing through it exceed 25% of its volume, and in which the holes are not small (as defined under solid masonry unit, 2); up to three holes, not exceeding 5 sq in. (32.5 sq cm) each, may be incorporated as an aid to handling.
