2016 - 2018 Chevy trucks do not have the tailgates sitting level with the bed. This creates an issue with the drawers pulling out. This can be fixed by welding a 1 1/2” square tube under the bottom to give the box the clearance it needs. If we do this the total outside height will be 12 7/16”.
When ordering online you can select the option to add the 1 ½” square tube to the bottom of the box. We also have customers who choose to fix the problem