Q Power QBOMB15VL SINGLE Single 15-Inch Side Vented Speaker Box with Durable Bed Liner Spray Side Ported Durable Bed Liner Spray Screw Down DELUXE Terminal Cups Rockville RQB15 Single 15&#034; Vented QBomb Subwoofer Enclosure Proudly Made In The USA, Using Only The Finest Quality Materials - For The Best Level of Performance From Your Subs! Bedliner finish is the same material as the back of a pickup truck Weather and corrosion resistant Water Resistant 3/4&#034; USA Heavy Duty MDF Construction Machine precision cut mounting holes Top of the line Glue for extra durable adhesion High quality GOLD spring loaded terminals Designed, tested, and engineered to work with most of todays popular woofers. These enclosures are built with the quality additives needed to maximize the performance of any sound system. Tuning frequency: 37Hz Type of Enclosure: Ported Enclosure Sub Size: Single 15&#034; Dimensions in Inches: 17&#034; L x 32&#034; W x 17H&#034; Top and Bottom Depth: 17&#034; Mounting Depth: up to 12.5&#034; (enough depth for any sub on the market) Gross Volume Per Sub (Measurement for the outer dimensions of the box): 5.3 Cubic Feet Net Volume Per Sub (Measurement for the outer dimensions of the box less the thickness of the wood): 3.85 Cubic Feet