These EXCEL SC soft-close undermount drawer slides by FGV America are 6-way adjustable with 4-way up/down and side-to-side adjustment through the included locking devices, plus 2-way easy height adjustment on the drawer member. Each slide supports a static load capacity of 100 lbs and fits drawer thickness from 1/2 in to 5/8 in (12.7 mm to 16 mm). Optional steel or adjustable nylon back brackets for face frame applications are available upon request.