Brute 48" Contractor Topsider W/ Doors Model TBS200-48 Smooth Aluminum you can install both behind-the-seat

you can install both behind-the-seat and under seat storage (Part #20067)

the DÜHA Lockbox is the best under seat truck storage system on the market

This box weighs 215 pounds

the CamLocker RV Box uses revolving cams that hook through welded catches to secure the box in the closed position

CamLocker Chest Tool Box 60 Inch Bright Aluminum Model RV60

Brute 48" Contractor Topsider W/ Doors Model TBS200-48 Smooth Aluminum you can install both behind-the-seatUnique Truck Accessories Brute 48" Contractor Topsider W Doors Model TBS200 48 Top & Bottom Compartments; Two Tiers of Storage; Made of . 063" Thick Aluminum Diamond Tread; Secure Stainless Steel Folding Locking T Handles; Weather Rsistant Rain Gutter Design; Full Rubber Seal