 Leatherman Supply. We'll help you design and build your dream look. Visit our new Grainger showroom and see the display of windows, doors, cabinets, and countertops. We welcome both contractors and homeowners to experience our commitment to customer service. For 22 years running, builders have used Anderson Windows more than any other brand. Visit Leatherman Supply to see Anderson Windows on display. Anderson Windows. More than just a window, their peace of mind. Leatherman Supply in Goshen and Grainger. A name you can trust because we help you see it through.