What is the minimum clearance required in front of a cleanout?

• A. 12 Inches
• B. 24 Inches
• C. 18 Inches
• D. 6 Inches

Answer: (C)

Access to a cleanout must have enough working space in front of the opening to insert and operate a plumber’s snake and to remove the cap without hitting obstacles. The minimum front clearance specified is 18 inches. This space allows you to maneuver the tool, rotate it as needed, and access the cleanout safely and effectively. If clearance were only 12 inches or 6 inches, there wouldn’t be enough room to work the snake or handle the cap comfortably. A 24-inch clearance exceeds the standard requirement for typical residential work, though it might be specified in particular situations. In general, plan for 18 inches of front clearance at a cleanout.