Product Details: Buyers Products PVC Conduit Carrier Kit is designed to mount on ladder racks and can be adjusted to build a carrier to any length. Its cast aluminum cap has a spring-loaded latching mechanism that allows easy access to the conduit. A neoprene gasket on the door seals the PVC to keep the interior dry. For added security, the ends have pre-drilled padlock tabs (padlock not included). Available to fit 4 in., 6 in., or 8 in. diameter PVC (not sold by Buyers Products), the PVC Conduit Carrier Kit includes everything needed for fast installation.