This CRL Anti-Walk Block Insert Tool is designed to insert the last Anti-Walk Blocks after the glass has been centered in the opening. Simply flatten a block against the glass near the vertical tube pocket and, using the Insert Tool, push the block between the glass and the pocket wall. After it passes the glass edge, it will snap back into its coil configuration, creating a positive block against movement. INSTRUCTIONS: After the glass is centered in the opening, determine the space between the edge of the glass and the bottom of the pocket. Use the Anti-Walk Block 1/16" smaller than the space. Flatten out the correct size blocks and insert them in the top and bottom of the vertical glazing pocket. Now insert glass in the opposite vertical pocket, using standard flush glazing procedures, pulling the glass back against the Anti-Walk Blocks that have already been inserted. Place a flattened Anti-Walk Block next to the vertical pocket that has no blocks already in it. Use the Insert Tool to push the block between the front edge of the pocket and the glass.