Every DU-HA is custom-designed to fit a particular model of truck. The Ram 1500 Crew Cab - 2019 model is designed to fit underneath your pre-existing back seats. It's constructed from heavy-duty polyethylene and comes with a lifetime . If your truck came equipped with a metal tray or a lid system under the back seat, you will need to remove the factory trays prior to installing your DU-HA. These trays are interchangeable, so you will be able to re-install them later if needed. This DU-HA holds 2 rifles or shotguns, 1 with scope, but may not act as a legal gun case in states with gun case laws, unless guns are first placed in sleeves. Check with your local authorities for the gun case laws in your state.