Type: Vent Pipe - AL29-4C Finish: N/A Rinnai, 224052, AL29-4C, Vent Pipe, Pipe Length, 19-1/2 Plastic Vent Pipe Extension for Non-Condensing Tankless Water Heaters Rinnai's unique Ubbink concentric venting system provides maximum performance, safety, and ease of installation. Compatible with all indoor Rinnai water heater models, except the 98 series which utilizes separate intake and exhaust venting. Plastic Outer Vent For Intake Easy To Cut Compared To Stainless Steel Dent And Impact Resistant Corrosion-Proof Non-Flammable Material (ul94-V0) Seamless Extruded Materials Casted Elbows And Adapters White Semi-Gloss Finish (Eu Ral 9016) Aluminum Inner Vent For Exhaust Easy To Cut Compared To Stainless Steel Stable, Thick-Walled Material Dent And Crease Resistant Not Affected By Scratches Seamless Extruded Material No Weld lines Thick-Walled, Casted Elbows And Adapters Lightweight Seal Rings With Maximum Temperature 400F (Approx. 200C) Features: GSA Approved Compatible With All Indoor Rinnai Water Heater Models EXCEPT The R98 Series Zero Clearance To Combustibles Easy Assembly Elbow May Be Required For Venting Applications Can be Cut To Size Professional Installation Recommended Specifications: Length: 19-1/2