Q: (from Dennis) I have two doors measuring 6 foot x 21 inches 3/4 inch thick which I want to slide past each other like a in wardrobe on double tracks top and bottom. They are 15kgs each and 16mm thick. Would your kit be suitable?
A: Yes, the Coburn Jason 4J can take doors up to 25kg each and the minimum door thickness is 12mm. The bottom tracks can be surface mounted (or recessed) and the wheels are surface mounted to the back face of the doors. The top tracks can be morticed in or surface mounted (see the technical pdf at this link).