For countertop installation mounted over a knee/pony wall, then into each stud on the knee/pony wall, to secure the weight of the countertop. If no knee/pony wall, then a 2x6 must be mounted inside the cabinet and the L Bracket attached spacing every 20. Model # L-26 Features: One - 26" x 2 " x " Solid Steel Bracket in Black. See full description " Screw Holes Countersunk for Flush Installation Beveled Edge for Safety Economical Way to Protect Countertop Investment. Non-intrusive. No corbels needed. Not intended for use as a shelf bracket. Read description for application use. Item Dimensions: 26" L x 2. 5" W x 0. 5" H.