Accu-Tuned 10 Dual sealed subwoofer enclosure designed for optimum bass response and low-frequency reproduction which is ideal for lower profile sound quality subwoofers.OEM-Fit is designed and engineered specifically for the 1965 “ 2018 Ford Mustang to ensure an OEM fit without impeding the operation of the back seat.High-Grade MDF for Ultimate structural rigidity and no-flex construction.0.85 Cubic Feet Net Volume internal air space (per sub) is ideal for tight accurate bass reproduction.