DU-HA Storage Systems / Gun Cases - Whether you're a contractor, sportsman or simply someone looking for a great way to organize your pickup truck and keep your guns and gear safely out of sight, the DU-HA is perfect for you. The DU-HA allows you to store your gear, guns, tools, tow ropes, jumper cables, and so much more safely and securely underneath the back seat of your truck. FITMENT NOTES: This model does NOT fit trucks that have the factory subwoofer installed. If you DO have a factory subwoofer box under your back seat, you will need to remove the subwoofer to be able to install the DU-HA in your truck. This model excludes/does NOT fit the 2004 Heritage Supercab. (It takes the 00-03 model - Part No. 20007.) Optional lock kit is available for this model (Part No. 80089).