The Fast Shade Water Gutter is used when two Fast Shade Pop Up Canopies are installed side-by-side. The water gutter wraps around the two valance fabric portions that are butted up against each other, attaching to the interior of each tent top along the loop fastener. This allows any run off from the top of the tent to flow along the gutter and out of the outer edge of the tent, keeping the interior dry. These gutters are only able to be used when the two adjacent tent portions are both 10' long.