CSST tubing must be directly attached to supports every

• A. 6 ft
• B. 3 ft
• C. 9 ft
• D. 12 ft

Answer: (A)

CSST tubing is flexible and needs solid, regular support to stay in place and protect fittings from stress. The code specifies that it must be directly attached to supports at intervals not exceeding six feet. This spacing helps prevent sagging, movement from vibration or pressure changes, and potential damage if the tube shifts or experiences strain at a connection. Choosing six feet as the maximum support gap keeps the run stable and reduces the risk of leaks or damaged connections. Spacing farther apart, like nine or twelve feet, would allow more movement and is not permitted, while a tighter spacing such as three feet, though more conservative, is not the required maximum and the code allows up to six feet.