BWT IST 2XL kit: 812116 bestmax 2XL Cartridge single, 812420 BWT besthead FLEX – 3/8“ elbow, 812137-B Hotbeverage - Testkit (KH+GH), 812195 Aquameter 3/8" with LCD Display, 812153 Reduction FM 3/8" x M 3/4", 812154 Reduction FM 3/8" x M 1" Ресурс 15000 литров при 8 kH или 12000 литров при 10 kH