TUBOS Vent Pipe Extension
TUBOS, a PVC-based plumbing vent pipe extension system, increases the height of existing vent pipes to meet local building codes. Only a saw, sealant, and approved pipe flashing are required for installation. The product is fit for use in any climate zone and fits PVC and cast-iron pipes with 4-, 3-, and 2-inch widths. Each TUBOS has a 6-inch joint splice-sleeve insert at each end so that one unit can fit two vent pipe applications, which reduces waste and materials costs.