www.pmmag.com/articles/89035-weatherguard-diamond-tread-aluminum-truck-boxes
WeatherGuard Diamond Tread Aluminum Truck Boxes
January 1, 2005

Knaack Mfg. Co. introduces its new line of Weather Guard(r) Diamond Tread Aluminum Truck Boxes with state-of-the-art designs, such as lock protection, an internal torque ring and a retracting button to determine lock status from a distance.
Circle 60