Constructed from solid rubberwood, the oak option has MDF veneered side rails whereas the white option features MDF Melamine side rails. This frame has a sprung slatted base to give natural bounce, adjusting to where pressure is most exerted to provide greater comfort. The gas piston strength on this frame is 588 N and can support mattresses up to the weight of 45 kg. The maximum weight load for the Phoenix Ottoman frame is 350 kg. Please note the mattress needs to be on the bed for the pistons to work. Birlea beds are only suitable for a UK standard size mattress and the recommended maximum mattress height is 203 mm. If your desired room of choice has a non carpeted surface please ensure that you use some form of anti-slip protection and do not place directly on the wooden floor. Please note that felt pads are not considered suitable anti-slip protection