This is an awesomely well built 10" subwoofer from one of the top producers of speaker drivers.
It has less than an hour of play as a dedicated woofer in a home audio setup. I ended up using a lighter woofer as this model was overkill for that application.
It comes in the original foam and box.
http://meniscusaudio.com/peerless-830843-p-575.html
http://meniscusaudio.com/images/830843.pdf