This lavatory support is intended for installation on walls before plaster, tile or other finish surface is applied. Securely welded to a heavy gauge steel plate, internally threaded sleeves are designed to protrude past the wall’s surface to accept adjustable threaded arms and arm lock nuts. To ensure that the high back lavatory is permanently and solidly affixed to the support arms, our Sure-set locking device adjusts from underneath the lavatory to firmly grip its inner wall while leveling screws ensure a precise installation.