ports on the side.. you choose either drivers or passengers..
tuned to 45hz but you can build a drop in for daily to tune it down.. i can help you with length and measurements if need be
external dimensions 16(h)x28.5(w)x23.25(d)
its coating in rubbercoating and could prolly use more in some areas.. i can do a finish spray with what i have left but its a nice box.. 1.5" front baffle with 1 coat of fiberglass resin on the inside.. just tired of it sitting around.. i have 3 boxes sitting in my apt