ProTech Underbody/Top Mount Box 18X18X72 Single Barn Door Style White Steel Model 22-2330B-GW Yellow Lower dimension of "L" portion

Lower dimension of "L" portion is 7"

Holds Up To 40 Inch Tires

These particular running boards fit specific years of the Chevrolet Colorado and GMC Canyon (see application info to verify fitment)

Merritt Saddle Box With Diamond Plate Door 22"H x 21"D x 36"W Model 481

ProTech Underbody/Top Mount Box 18X18X72 Single Barn Door Style White Steel Model 22-2330B-GW Yellow Lower dimension of "L" portionProTech Underbody Top Mount Box 18X18X72 Single Barn Door Style White Steel Model 22 2330B GW 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 72in L Secure storage to protect your tools and equipment.