... Chamber: 1>Certi:TS16949 2>Single:T09,T12,T16,T20,T24,T30; 3>Double:T2024,T2424,T2430,T3030. 4>Gompetitive price ... offer Single Room Air Brake Chamber T09, T12,T16,T20,T24,T30, Double Room Air Brake Chamber T2024, T2424, T2430, T3030 ... ISO9001/2000 quality control system. Truck Trailer Air Brake Chamber T24