50 130*130 suitable 80*80 internal circuit, 50 120*170 suitable for 1.2 meters in length, 50 120*190 suitable for 1.4 meter barrels in length, 50 120*200 suitable for 1.5 meter wood barrels, 50 120*210 is suitable for 1.6 meter wood barrels in length, 50 pieces 120*230 suitable for 1.7m long wooden barrel, 50 120*260 suitable for all single bathtubs, 50 130*320 suitable for single double bathtub, 10 independent installation 120*260 is suitable for single -player bathtub, 10 independent installation 130*320 suitable for double bathtub