Does this box come with mounting hardware?

Hardware for mounting is not included with the box. Mounting method depends on your truck bed or trailer configuration — you'll need to determine fastening points and secure accordingly with bolts or clamps rated for your setup.

Can I use this on a trailer, or is it truck-bed only?

Universal design works on both truck beds and trailers. The box itself is self-contained — just secure it to your bed or trailer frame with appropriate fasteners for your application.

Does the black finish need any prep or touch-up before installation?

Powder-coat finish arrives ready to install. No sanding or primer needed. If the finish gets scratched during use, touch up with black spray paint or a matching automotive finish to prevent corrosion at the damaged spot.