I need to get rid of some extra boxes I have. First box is a dual ported box,tuned to 35hz. currently housing 2-jl 13.5 subs $50 second box is a single ported box, tuned to 32hz housed 1 jl 13.5 sub $30 and finally a single box for a 10" square sub, such as kicker. $25 All of these boxes were built to recommended specs.