All Gator racks are complete with field replaceable front and rear threaded steel rack rails. Each rack is stackable with protected corners for safe shipping, meeting all ATA specifications. The front and rear removable lids are lockable. 18.75" rackable depth Lightweight polyethylene construction Front & rear rack rails Threaded field replaceable 7mm zinc plated steel rack rails Locking lids Heavy duty twist latches Side handles Heat treated 10/32 bolts with protective washers included Specifications: Interior Front Rail to Rear Rail Distance : 16.5" Interior Front Rail To Rear Lid : 18.75" Interior Lid Depth : 2.25" Exterior : 6.5" x 22" x 22.375" Weight : 10 lbs.