The Castle cot sides fit between the mattress and the bed base. Adjustable in width for single or double beds and also in length. They can be adjusted in height, using a pin clip system. The cot side is dropped down by a simple push button release and raised up with a click, lock action. The whole side can be removed easily to give quick access for making the bed. Bed width 840 to 1370mm (33 to 54"). Side rail length 1266 to 1866mm (50 to 74"). Height of top rail over bed base 366 to 591mm (141/2 to 23"). Side drop on release 250mm (10").