An aircraft seat that includes a seat bottom frame having a back, a seat back frame pivotally connected to the back of the seat bottom frame, and a seat back shell. The seat back shell has at least a front panel, a back panel opposite the front panel, and at least two side panels disposed between the front and back panels which connects the front panel to the back panel. The combination of the front, back, and side panels form a gap to receive the entire seat back frame.