Rockville RSV12XL Single 12" Vented 1.6 Cu Ft Car Sub Enclosure Box 3/4" MDF Rockville RSV12XL Single 12" 1.6 cu. ft. MDF Vented Subwoofer Enclosure Extra Large Enclosure For Large and Powerful Subwoofers Single 12" Vented Enclosure. Machine precision cut mounting holes. Designed to give the best sound quality 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 todays popular woofers. These enclosures are built with the quality additives needed to maximize the performance of any sound system. Rockville RSV12XL Single 12&#034; 1.6 cu. ft. MDF Vented Subwoofer Enclosure Extra Large Enclosure For Large and Powerful Subwoofers Single 12&#034; Vented Enclosure Machine precision cut mounting holes 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 todays popular woofers. These enclosures are built with the quality additives needed to maximize the performance of any sound system. Designed to give the best sound quality Tuning frequency: 40Hz Type of Enclosure: Vented/Ported Enclosure Sub Size: Single 12&#034; Dimensions in Inches: 18&#034; L x 20&#034; W x 14.25&#034; H Top and Bottom Depth: 20&#034; Mounting Depth: up to 18.5&#034; (enough depth for any sub on the market) Gross Volume Per Sub (Measurement for the outer dimensions of the box): 2.6 Cubic Feet Net Volume Per Sub (Measurement for the outer dimensions of the box less the thickness of the wood): 1.6 Cubic Feet