There are 16 positions, 10 are filled and there are 6 blanks available to be be filled. You have to purchase the breakers and do it yourself. Its easier to do this right away because if you do it later the wires get in the way and make it harder to work. All the backlighting and indicator lights are complete so the only thing you need are the circuit breakers, The 15 Amp circuit breaker, that fits in this panel is p/n 7210 but most people would actually use a mix of 5A,10A, 20A and 30A breakers as required.