KV 8400 Series Full Extension Precision Ball Bearing Slides Self Closing 20" 100# Class (Set) Load rating 100#, side clearance - 1/2" + 1/32" - 0, Side mounting, Side height 1-13/16" Self closing, Steel ball bearing, Full 32mm hole pattern, Non-handed Spring loaded self-closing feature, Screws included Optional Rear Mounting Bracket, Search: KV Rear Mounting Bracket Anochrome Optional Face Frame bracket, Search: KV Face Frame Mounting Bracket