The Eagle Group MMNSB-K/A-21-L is a durable single knob shelf bracket designed for left-side installation. Measuring 21 inches in length, it is compatible with cantilevered shelving systems and can support both wire and solid shelving. With a robust capacity of 395 lbs, this bracket is constructed from lightweight aluminum, ensuring strength without added bulk. It is NSF certified, making it suitable for commercial use in food service and other demanding environments.