Rinnai 39" 2/4 Condensing Vent Pipe Extension (PPtl)

39" 2/4 Condensing Vent Pipe Extension (PPtl) 2/4 in. (60/100) Ubbink Vent Components (for U.S.) For use with the following models: RU199i (REU-N3237FF-US), RU180i (REU-N2934FF-US), RU160i (REU-N2530FF-US), RU130i (REU-N2024FF-US), RUR199i (REU-NP3237FF-US), RUR160i (REU-NP2530FF-US), CU199i (REU-N3237FFC-US), CU160i (REU-N2530FFC-US). Material of Inner/Exhaust - Polypropylene. Material of Outer/Combustion Air - Plastic. Vent components consist of an outer plastic vent for air intake 4 in. (100 mm) and an inner polypropylene vent for the exhaust gases 2 in. (60 mm).