Buyers Products Key Locking Conduit Carrier Kit is designed for use with 4", 6", or 8" diameter PVC (not included). Ideal for ladder rack, service body, and trailer applications, this kit can be built to accommodate any desired length, great for securing conduit and long materials. The kit includes the cast aluminum door and end cap, drill-free zinc-plated mounting plates, and hardware for easy installation. 2 keys are included, and the door also accepts a padlock (not included).