Rinnai Tankless Rinnai Wall Thimble for Indoor Tankless Water Heaters

Wall Thimble for Indoor Tankless Water HeatersRinnai'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 R98 SeriesProfessional Installation RecommendedSpecifications:Height: 18-1/4"Length: 10"Width: 5-3/4"For Rinnai Certified Installation: ...