Graco Reactor 3 E-20Upgrade your rig with a powerful NEW Reactor 3 proportioner, built with advanced capabilities for spray foam applications. Reactor 3 is designed to communicate with the entire system to simplify the operators job, optimize spray parameters and maximize productivity. The E 20 is a spray foam system build for contractors focused on smaller jobs or for contractors just entering the business, it is a great starter machine. Due to the smaller heaters the E