This cast iron lead seal plug is used in caulk ferrule cleanouts. It can be equipped with one of two secured scoriated frames and covers. Fig. 4438 is designed for face-of-wall installation in tile, masonry, or dry wall construction. It is usually installed on an opening in the finished wall. Fig. 4439 is intended for flush-with-wall installation in plaster or wet wall construction and is installed during the wall construction. Both are fitted with anchoring lugs that secure the frame to the wall.
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