Plumbing Vent Pipe Extension in bodyTubos, Inc. has introduced TUBOSâ, a plumbing vent pipe extension. With TUBOS, projects meet local building codes by increasing the height of existing vent pipes to the required applicable height. This is done quicker with fewer tools and less waste than traditional methods. It is designed for commercial and residential applications in any climate zone, and the product fits PVC and cast-iron vent pipes and is available in 4-, 3- and 2-inch widths to match standard vent pipe sizes. For more information, visit