check it out... all 1/2" MDF (it's only about 40 lbs with these speakers in it)... holds two 12's (these are temporary til ups delivers the good stuff). I had to have a real system in the car because it's so loud you can't hear the factory stuff. and I had to get this in the car before I weld in my 8 point cage and add my new racing seats and new carpet kit... cause this can't be removed after the cage is put in.