Installation 1) Measure and mark center lines for mounting bracket installation using dimensions Note: TB-18, TB-24 and TP only. Make sure both center line marks are level. 2a) Dry Wall Option: Place mounting brackets into desired position. Using brackets as a guide, carefully drill 5/16" holes into wall. 1 Note: For plaster walls 1/2" thick or less, insert toggle tool into toggle anchor to secure behind wall prior to installing accessory trim. 2b) Stud Option: Place mounting brackets into desired position.