Johnsen s R-134a 12 oz. automotive A/C refrigerant is 100% pure refrigerant designed to replace lost refrigerant and restore cool air. Over time the seals and connections in your vehicle s air conditioning system can allow a small amount of R-134a refrigerant to leak past and escape into the atmosphere. This product is for use in retrofitted and or factory installed r-134a auto air conditioning units. Meets AHRI 700-2006 and SAE J 2276 purity standards. For use on car crossover & minivan light truck pickup truck bus sport utility vehicle with R-134a systems. Assembled product dimensions: 3 x 3 x 5 (1.02 lb weight).