ProTech Underbody/Top Mount Box 18X18X48 R/H Double Smooth Barn Door Style Bright Aluminum Model 20-2275R 39 Gallon Truxedo TruXport Tonneau Cover -

Truxedo TruXport Tonneau Cover - Black - 1982-2011 Ford Ranger 7' Bed Model 250601

you know it is bolted in there to stay

2007-2019 GMC Sierra 2500 HD

The 1705205 Buyers Underbody Box is one of the best underbody truck boxes for your money

and they are commonly used on trucks

ProTech Underbody/Top Mount Box 18X18X48 R/H Double Smooth Barn Door Style Bright Aluminum Model 20-2275R 39 Gallon Truxedo TruXport Tonneau Cover -ProTech Underbody Top Mount Box 18X18X48 R H Double Smooth Barn Door Style Bright Aluminum Model 20 2275R ProTech Underbody Top Mount Boxes Secure, Weather Resistant, and Built to Last. ProTech Storage Boxes are engineered to provide unparalleled security and weather resistance. Designed for mounting on top of flat surfaces, these rugged boxes are as tough as the job demands. Dimensions: 18in H x 18in D x 48in L Secure storage to protect your tools