Durham heavy duty bearing slide rack. Sturdy construction using prime cold-rolled steel. Each cradle holds up to 75 pounds. Solid cradle extends beyond the opening of the unit when in the open position reducing the chance of drawer covers closing when not intended. Positive closure feature keeps trays from sliding out unintentionally. Punched holes for easy installation of locking hinge (locking hinge not included). Slides can be replaced. Modular with standard base and slide rack. Durable gray powder coat finish.