Ladder: Universal, Can be Fixed to the Left or Right Side of The Bed. Ideal to find the best location in your room. SAFETY Manufactured to British Standard EN747: 2012 Part 1&2 MATTRESS Bed Accepts a Mattress Size: 90cm by 190cm Maximum Depth of Mattress: 20cm Mattress Options: Pheonix Mattress: Conforms to British Standards BS7177. An open coil sprung mattress with stichbond covering.