Labels:book | box | cabinet | inkle | knife | poster | railing | sky | windowpane OCR: #30 Corner Expansion Joint 5/16 "inside corner' expansion An DEPTH joint. 15 designed to reduce cracking and allow movement inside corners of wall to wall junctures resulting from expansion and contraction. Available in both Galvanized and Zinc grounds 1/2 and 7/8 vailable