Check the listing for details. TRU SPEC Prefab Single 12" Subwoofer Enclosure Sub Box. Condition: New. Listed at 184.99 USD. ***DUE TO THE CURRENT HIGH VOLUME OF HOLIDAY ORDERS, OUR LEAD TIMES ON TRU SPEC ENCLOSURES WILL HAVE TO TEMPORARILY BE INCREASED UP TO 14 DAYS (10 BUSINESS DAYS).***Every Tru Spec enclosure is computer designed, CNC cut, and assembled inhouse at GPcarAudio. This Tru Spec single 12" subwoofer enclosure is 1.75 cubic feet AFTER displacements including a displacement of 0.12 cuft per woofer. The internal volume and port area of this enclosure is versatile to most 12" subwoofers available on the market as long as your cutout is 11.2" or less, We do a 35hz tune which will give you a wide musical playable bandwidth while still being able to hit the lows nicely. This will Truly be one of the best sounding prefabs you will find.TRU SPEC PREFAB SINGLE 12" with double flush baffleMaterial: 0.75" MDF Box External Dimensions Width × Height × Depth 24.00" × 14.00" × 16.15" Material Thickness 0.75" Net Internal Volume 1.75 ft3 Tuning Frequency 35 Hz Port Area 26.00 inch2 Port Inlet Width × Height 2.08" × 12.50" Port Length 26.41" Cutout Diameter: 11.2" Flush Trim Diameter: 13.1"