This is a DEDHQ-D1LL1W 2.4M Quart Shelf.Direct drive eliminates motor belts & pulleys. Efficient quality design only five moving parts per shelf. Extremely quiet, approximately 68 decibels. Side panels features two powder coated steel side panels per shelf. Modular & versatile easily upgradeable by simply adding or removing shelves at any time. Easy to maintain, maximum safety.