Speaker QPower QBOMB12VL 12″ Dual Vented Ported Car Subwoofer Sub Box Enclosure November 9, 2020 Techinfo24 0 Comments Price: $159.99 - $139.46(as of Mar 28,2024 16:10:58 UTC – Details) Dual 12″ SPL Vented Speaker Box made from high grade MDF wood then finished with durable bed liner spray Cutout diameter: 11 inchesTuned to: 47 hz3/4″ MDF ConstructionBlack Bed “Rhino” Liner Spray Finish