(R/H Transfer shown)
Guidelines recommend a horizontal rail adjacent to the WC pan, a vertical rail and a fold down rail at the transfer side of the WC, two vertical rails, one either side of the basin/mirror and one horizontal rail on the rear of the outward opening door.
This diagram shows the recommended layout for a right hand transfer cubicle (the opposite applies for a left hand transfer).
ALM have designed the ability kits to work specifically with typical cubicle materials i.e. compact laminate, MDF & chipboard. The through fixing plates and caps provide a solid clamping of the panel and eliminate the possibility of screws pulling out over time.