Using this Atosa MPRA - 7 rack is easy. Just place your sheet pans or bun trays on the tiers. Whether they're half - sized or full - sized, they'll fit nicely. Make sure not to overload the rack as its total weight capacity is 350 Lbs. For maintenance, simply wipe it down with a damp cloth regularly to keep it clean. Avoid using abrasive cleaners as they may damage the aluminum finish. Store it in a dry place to prevent rusting. This rack is perfect for keeping your commercial kitchen or bakery organized.