KEEP ADDITIONAL REFRIGERANT ON HAND FOR QUICK REPLACEMENT TO LIMIT DOWNTIME THIS CYLINDER FEATURES A PRESSURE RELIEF DEVICE THE FEDERAL CLEAN AIR ACT RESTRICTS THE SALE AND USE OF CFC AND HCFC REFRIGERANTS TO TECHNICIANS CERTIFIED BY AN EPA-APPROVED TESTING ORGANIZATION REFRIGERANT PRICES ARE SUBJECT TO CHANGE WITHOUT NOTICE CALL 1-800-GRAINGER 472-4643 FOR CURRENT MARKET PRICE