Rinnai 224045 Venting Wall Thimble
Concentric ventilation system for Rinnai tankless water heaters
Rinnai's unique Ubbink concentric venting system is easy to install and offers nothing but the best in performance and safety. Compatible with all indoor Rinnai water heaters, except the 98 series which uses separate intake and exhaust vents.
• Fits 2x4 or 2x6 wall construction
Available concentric water heater vent fittings
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