10 T5 / T5.1 / T6 / T6.1 sub box Package driver seat VW T5 custom box. Custom Sub box Built specifically for the VW T5/T6 that fits directly under the driver seat to enhance you system with some much need bass. This kit contains the following. 1 x 10 Sub box made from moisture resistant MDF. The subwoofer is not included but many options with different subs and amps – message for details. Dimensions are approx 38cm x 34cm x 16.5cm deep (excluding the angles).