Using this product is simple. First, if you need to load paper towels, open the dispenser and place the roll in the appropriate slot. The automatic transfer feature for the stub roll means you won't have to worry about manually changing rolls often. When you need a paper towel, just give a gentle pull at the touch - free dispenser, and it'll give you a 12 - foot (305mm) length. For the waste receptacle, unlock it from the cabinet when it's full, empty it, and then lock it back in. As for maintenance, use a mild cleaner to wipe down the satin - finish stainless steel surface regularly to keep it looking great. Avoid using abrasive materials that could scratch the surface. If you plan to convert the unit in the field, you don't need to replace the existing wall cabinets, but make sure to follow the guidelines in the accessories and related products listing for a smooth conversion.