There are two drain set-ups on each side. Each window opening has drain holes in the window channel, which funnels into a single hose. The total length of the funnel and hose is about ten inches. The hose goes through a inner panel support and ends just below the seam found inside the Suburban just above the wheel well. If you look inside the access holes you will see the hose, I have never tried to remove them but I bet you they are welded in place by time. It is unfortunate that they did not entend the hose out through the bottom of the cab, allowing the silt and debis to exit the cab instead of collecting inside the panel.