I have this enclosure with a pair of SKAR VXF 12s. I'm running a Trauma 3000TCS @ 1ohm, and this box is awesome! Been running this combo for 4 months WFO and the box has zero rattles, nothing has came loose, it's very sturdy, even compared to previous custom built boxes built by professionals. Pay attention to some of these reviews, if you bought a SKAR prefab (universal) enclosure, and your non-SKAR subs don't fit, that falls on the purchaser. Make sure the measurements of your subs will fit in ANY prefab box, failure to do so will result in butt-hurt whining in the review section. Also, this is a sturdy enclosure, it's not "just glued together" 😂 it would arrive in a heap on pieces from the carrier service if that was the case. "My 15" Earthquake sub won't fit", measure folks, you will be blown away by the quality for the price!! This is a five star enclosure!