ATREND ATRE12DSV BBox Series Dual Vented Enclosure with Shared Chamber (12") Category_Floor Mats Conceals and protects cables 8 awg Push Terminals Conceals and protects cables The TR 4 PAC Audio Low Voltage Remote Turn On Trigger turns on the amp or subwoofer in your car audio system Pro Tuned Dual Vented (shared air space) subwoofer enclosure designed for optimum bass response and low frequency reproduction which is ideal for high power or sound quality subwoofers1 in high grade MDF front baffle for ultimate structural rigidity and no flex constructionCNC miter and dado design and construction for the ultimate in an airtight precision fit of all parts which ensures a rattle and noise free environmentRecessed side panels increase structural integrity and eliminates unwanted flex and vibrationSpecially formulated aliphatic wood glue ensures an airtight seal between all MDF parts with a second application of glue around all internal joints after final assemblyPneumatic applied brad nails pull tight and hold MDF parts during the glue drying process and help assure a no leak