Sealed Enclosure Volume:1.24-2.12 Cubic Feet. Vented/Ported Enclosure Volume: 1.94-2.83 Cubic Feet. 1-Way XMAX: 28 MM. 2-Way XMAX: 56 MM. Weight: 41.08 lbs.. Shipping Weight: 43.28 lbs.. Shipping Box Dimensions: 15.75” x 15.75” x 13.58” Inches.Features of RBS12:: Rockville RBS12 Single 12" 2.6 cu.ft. SPL Vented/Ported Subwoofer Enclosure Box. Single 12" SPL vented subwoofer enclosure. Designed to increase SPL - This box will make your sub louder than other enclosures. ¾” USA Heavy Duty MDF Construction. Top of the line Glue for extra durable adhesion. High quality GOLD spring loaded terminals. Designed, tested, and engineered to work with most of today’s popular woofers. These enclosures are built with the quality additives needed to maximize the performance of any sound system. Tuning Frequency: 43 Hz Description of PUNISHER 12D1: The Rockville Punisher series of subwoofers were built from the ground up to survive brutal amounts of abuse and heat.. This subwoofer is huge and beefy and is in the heavy-weight division weighing in at 41.08 lbs. The magnet is a 246 Oz (15.38 lbs). This sub has our best cooling technology which means even if you are entering competitions and playing 1 minute test tones it will handle it all day! We added a thick aluminum ring near the t-yoke that absorbs and dissipates a ton of heat. We also used a much thicker T-Yoke and washers which also absorb heat. The voice coil we use is 3” and is rated to handle heat up to 250 Degrees Celsius. This sub is engineered and built better than other subs that cost twice the price. Recone kits are available, and this item includes a 90 day money back guarantee. If you don’t like it we will send you a return label and take it back and give you all your money back. Description of RBS12: The RBS12 is a single vented speaker box is made in the USA with Grade “A” ¾” MDF wood. This enclosure is made with precision cutting machinery by industry experts that have been making these enclosures in the USA for over 20 years. All Rockville enclosures come with a customized enhanced glue that is unmatched by any other manufacturer. That means that the carpet will stay in place and not rip or tear. The ¾” USA MDF is much stronger then any type of import wood. This will keep your box performing at an optimal level by not flexing and distorting your woofers. Your woofers will thank you! EVERY Rockville enclosure is not only glued at all joints but stapled as well. If that wasn’t enough we add a layer of silicon to every seam! This makes your Rockville enclosure rock even more!