Mount euro slides in face frame cabinets without blocking out the sides. Woodtek® face frame sockets are required when mounting Woodtek® euro slides where the cabinet sides are not blocked out flush with the face frame. One pair of sockets is required for each pair of slides: Sold in pairs (one left and one right; mounting screws not included). Durable, 3" long plastic sockets have pre-drilled baseplates allowing for final adjustments. USA to help complete your project, may we suggest Woodtek® self closing euro slides 938-223 euro slide screws 931-268.