Rinnai Tankless Rinnai Universal Bug Guard

Universal Bug GuardRinnai'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. Features:GSA ApprovedCompatible With All Indoor Rinnai Water Heater Models EXCEPT The R98i SeriesEasy AssemblyPolypropylene Concentric Standard Wall Discharge 21 In.Professional Installation RecommendedSpecifications:Length: 9-1/2"Width: 9-1/2"Heigh...