An adjustable power bed layer that has a bed frame that folds from a flattened state to a folded state and from a flattened state to an adjusted state. The bed frame has an inner and outer frame that nest with each other in the flattened state. Head side and foot side actuators drive sliding members back and forth along respective tracks to pivot respective articulating frames between the flattened and adjusted states. The articulating frames are part of one of the inner and outer frames and the tracks are connected to the other of the inner and outer frames. In the folded state, the bed frame is positioned to that one of head side and foot side actuators becomes accessible for maintenance and servicing from above depending upon which way the bed frame is folded about its folding pivot.