Ideal for reaching recessed dump stations to keep everything flowing smoothly. By elevating the sewer elbow out of a recessed sewer inlet, the 4-in-1 Sewer Extension streamlines the hose, reducing unwanted kinks and bends. The 4-in-1 Sewer Extension fits between the 4-in-1 Adapter and the elbow and extends adapter 3". Sewer Extension is clear, allowing you to see when the tank is empty. It locks securely to help prevent spills, and is compatible with any Camco 4-in-1 Adapter. 39735