Rockville RSST12 Single 12" 0.9 cu.ft. Sealed Car/Truck Shallow Sub Enclosure Rockville RSST12 Single 12" 0.9 cu.ft. 3/4" MDF Sealed Truck Subwoofer Enclosure Box. Proudly Made In The USA, Using Only The Finest Quality Materials - For The Best Level of Performance From Your Subs! Designed For 12" Shallow Mount Subwoofers. 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 perfectly with high powered subs. Designed to give the best sound quality Type of Enclosure: Sealed Truck/Shallow. Enclosure Sub Size: Single 12" Shallow Dimensions in Inches: 20" (L) x 7.5" (Bottom Depth) x 5" (Top Depth) x 15". Top and Bottom Depth: 15". Mounting Depth: up to 6" (enough depth for any shallow sub on the market) Gross Volume Per Sub (Measurement for the outer dimensions of the box): 1.1 Cubic Feet. Net Volume Per Sub (Measurement for the outer dimensions of the box less the thickness of the wood): 0.9 Cubic Feet Rockville RSST12 Single 12&#034; 0.9 cu.ft. 3/4&#034; MDF Sealed Truck Subwoofer Enclosure Box Proudly Made In The USA, Using Only The Finest Quality Materials - For The Best Level of Performance From Your Subs! Designed For 12&#034; Shallow Mount Subwoofers 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 perfectly with high powered subs Designed to give the best sound quality Type of Enclosure: Sealed Truck/Shallow Enclosure Sub Size: Single 12&#034; Shallow Dimensions in Inches: 20&#034; (L) x 7.5&#034; (Bottom Depth) x 5&#034; (Top Depth) x 15&#034; Top and Bottom Depth: 15&#034; Mounting Depth: up to 6&#034; (enough depth for any shallow sub on the market) Gross Volume Per Sub (Measurement for the outer dimensions of the box): 1.1 Cubic Feet Net Volume Per Sub (Measurement for the outer dimensions of the box less the thickness of the wood): 0.9 Cubic Feet