Rubbermaid FastTrack Shelf Bracket. Rubbermaid FastTrack is an adjustable， easy to install shelving system with superior strength. The all steel rail and upright system is completely adjustable to help you build a durable solution to match your specific storage needs. Various shelving depths are available from 12 In. to 20 In. deep to help you maximize your storage space. FastTrack is ideal for pantries， laundry rooms， linen closets and utility rooms and gives you the safe， sturdy storage space you need to organize things like heavy food items， totes， laundry soap and more. FastTrack rails are the key to an easy to install system. Install the rails， then hang uprights， add brackets and shelves to complete your closet shelving system.