Upper slider has a retractable tongue for easy door insertion or removal.
Lower roller has height adjustment of +/-2mm for perfect door fit.
One set consists of 2 upper sliders & 2 lower rollers and should be used 2 each per door.
Both upper and lower parts are inserted into 30mm diameter holes in the rear of the door drilled in 7mm from edge and 9mm deep.
Cut door 1/4" smaller than opening.
Used with Sliding Wood Door Track.