Gobrico Rear Mount Drawer Slides+Brackets Full Extension Heavy Duty Soft Close 22 Inch,10 Pairs Sets Length:22"(550mm),Thickness:1/2"(12.7mm), Width:45mm,Load capacity:100LB Mounting:Side/Rear Mount with Brackets, Material:Cold Rolled Steel Hydraulic Soft/Self Close feature to slowly draw the drawer closed without slamming shut Includes left and righ hand slides,brackets,installing screws To determine which size of slides are good for your drawer, please measure the length of the drawerwithout the frame board.And if the length is not even, please choose1 inch shorter.The length of slides can't be longer than the cabinet case depth