List of Johnstone Supply Stores in Downers Grove, IL Outlet Note Regular Brands Johnstone Supply Illinois Downers Grove Rating 5 based on 75 votes Products Tools Supplies HVAC Equipment HVACR Parts Motors Refrigerant NameAddressPhone Name/Address/Phone Johnstone Supply outlet - Downers Grove 5365 Walnut Ave (630) 427-6200 People Also Viewed