Package: (2)Hifonics HWX12D4 12" 1400 Watt Peak / 700 Watt RMS Dual 4-Ohm Car Subwoofers + Rockville RDV12 Dual 12&rdquo; 1.55 cu.ft. Vented Subwoofer Enclosure + Dual Enclosure Wire Kit With 14 Gauge Speaker Wire + Screws + Spade Terminals 12" 700 Watts Peak Car Subwoofer. 700 Watts Peak Power / 350 Watts RMS. Satin black polypropylene cone. Satin black linear butyl rubber surround. Nickel-plated P&I (push and insert) speaker terminals to easily secure the MAXXLINK speaker wire. Heavy duty PVC Cover. Specialized cotton spider. Thermoformed Dust Cap. Unique back venting system allows more heat to be exchanged with cool air allowing more power handling and increased reliability. 2" Aluminum voice coil. 30 oz. magnet motor structure. 12" Vented Subwoofer Enclosure. 3/4" 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. Type of Enclosure: Vented. Enclosure Sub Size: Dual 12". Top and Bottom Depth: 17.75". Mounting Depth: up to 16" (enough depth for any sub on the market). Tuning Frequency: 41 Hz. Port Dimensions: 2.5" x 13" x 12". Gross Volume Per Sub (Measurement for the outer dimensions of the box): 2.1 Cubic Feet. Net Volume Per Sub (Measurement for the outer dimensions of the box less the thickness of the wood and port): 1.55 Cubic Feet 20 Drywall Wood Screws (Wood screws are the type of screws; the screws are actually made of metal). 20 Feet of 14 AWG Blue Speaker Wire. 4 Spade Terminals