The Henny Penny 22225 Warmer Door Glide is installed by creating a smooth sliding surface that directs, the part on its track so that it can slide easily back and forth when opening and closing. The shape and material used in it minimize friction between the door and the cabinet frame as it moves. It is attached to the guide rail or channel in the warmer assembly where the glide is th... https://partsfe.com/door-glide-for-henny-penny-part-22225