Floor-mounted (FM) units fit under the rack and are compatible with almost any type of pallet racking, but can also be used as freestanding units. They are fixed to the floor with bolts through the lower frames, which act as rails for the upper frames to slide out on bearings, and are supported by high quality pallet truck wheels at the front. Being able to pull the units out of the rack allows for safe and easy access to stored goods! Cost-saving ergonomics are a primary consideration with FM units, as with all Smart Storing designs. Each model uses the right sizes and numbers of quality ball bearings, so they’re strong, reliable and easy to slide in and out. Guide rails ensure the units stay in line when pulled out, and can be pushed back in without effort. A safety latch is automatically engaged when the unit is in the rack. This prevents the unit from being unintentionally pushed out from the other side of the rack. (This feature is especially important when using rear loaded units or units placed in a double rack, where they can be hit from behind when loading the opposite unit).