GRACO GUSMER For all your SPF Application Needs. Long recognized as the most reliable plural-component foam and coatings metering unit on the market, the H-20/35 Pro has been designed to increase productivity with new hybrid heaters for rapid warm-up and stable temperatures in up to 410 feet of hose length. If you want to increase productivity with more spray time, the new Gusmer H-20/35 Pro Series is tough to beat. Visit or call 800-367-4767.