Camco Ven Geri GENERATOR EXHAUST EXTENSION KIT

Just to add to what others have already said. Rain drops very seldom fall exactly straight down. In addition, the plastic sections of the GenTuri are not likely to be exactly vertical. Because of these factors, nearly all rain drops entering the top of the VenTuri will strike the wall of the plastic pipe before reaching the bottom, then run down the inside to the pipe and drip onto the ground at the air gap.