The 255 Series Pilasters are designed for built-in adjustable shelving applications. They are most commonly used in custom cabinetry & bookcase type applications. If you are looking to install shelving with minimum visibility of the hardware, this is likely what you are looking for. Pilaster clips are able to be adjusted on these standards in 1/2" vertical increments. Knape & Vogt makes these pilasters out of 23 gauge high strength steel that have a profile is 39/64" wide x 11/64" deep . Knape & Vogt 255 Series pilasters are BHMA Grade 1 approved and Made in the USA.