Bassworx 'HSR12G Single 12-InchSealed Enclosure (Black) High power handling, Fixed black gloss panel, large corner-radius design, Wedge shape profile, 3/4"" MDF construction, Top grade carpeting, 8.5 Inch Mounting Depth, 11.125 Inch Mounting Diameter. Times are a changing, and so is the shape of our enclosure. The smooth flowing corners provide an acoustically advanced environment for your subwoofers, eliminating the nasty result of standing waves that lead to acoustic discoloration. High power handling Fixed black gloss panel Large corner-radius design Wedge shape profile 3/4 MDF construction Top grade carpeting 11.75 Inch Mounting Depth 9.375 Inch Mounting Diameter