TUBOS are pre-fabricated plumbing vent pipe extensions that offer several advantages. They are easy to install with standard hand tools and come with built-in pipe joint splice sleeve inserts. TUBOS are economical and can be used for two installations, saving on material costs. On average, they take only three minutes to install and can save up to $35 each. TUBOS are designed to meet plumbing vent pipe height requirements and comply with plumbing vent codes.