The Dometic CFX SLD3540 is designed to fasten the CFX 35W, CFX 40W, CF 35, CF 40, and CF 50 powered coolers into vehicles. Allowing easy slide out access to your fridge or freezer, it makes for convenient loading and unloading. It also keeps the powered cooling units safely and securely held in position. Pre-drilled mounting holes perfectly match the powered cooler's mounting nutserts, ensuring installation with minimum fuss!