INSTALL OR REPLACE DRAWER TRACK HARDWARE – Whether you are installing new drawers or repairing one that won’t open or close properly, Prime-Line Drawer Slide Kit fits most bottom/side-mounted drawer systems. The drawer slide kit is constructed of steel tracks with a white powder coated finish and self-lubricating plastic rollers. SELF-CLOSING DESIGN – The smooth-gliding tracks in the Prime-Line R 7211 kit features a self-closing design that commences at the final 2-1/2 inch from the end of the 17-3/4 inch long tracks when closing. EASY TO INSTALL – Installation is quick and easy, and the kit contains all necessary fasteners. Installation instructions are included and also available on Prime-Line’s website. 75 LBS MAX LOAD CAPACITY – The maximum load capacity for the drawer slide kit is 75 lbs. and is for use in 18 inch deep drawer cabinets. It features a positive stop in the closed position and a double stop in the extended position that locks your drawer open, so it cannot be pulled too far out and fall off the tracks. INSTALLATION TIP – The clearance required between the drawer and the drawer opening for these slides is: 1/2 inch on left and right sides, 1/4 inch at the bottom and 5/8 inch at the top.