These cot sides sit between mattress and 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, and can also be 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 14 1/2 to 23"; Side drop on release 250mm 10"; For further information please contact your local shop or call 01908 644133. This product is VAT exempt to eligible customers. To obtain VAT exemption please complete the VAT exemption form during checkout.. You will be able to select your desired size after you have clicked "Buy"