Description
The Rheem-Ruud RTG20270B is a concentric straight vent kit designed to streamline the venting installation of compatible Rheem and Ruud tankless water heaters. By routing both the combustion air intake and exhaust flue gases through a single, co-axial pipe passage, this concentric vent solution reduces the number of wall or roof penetrations required — saving installation time and preserving building envelope integrity.
Key Features
- Concentric (co-axial) straight vent design — intake and exhaust in one assembly
- 11.66″ straight vent length for precise, low-profile termination
- Engineered for compatible Rheem-Ruud tankless water heater models
- Single wall/roof penetration simplifies installation and reduces labor
- Durable construction built to withstand outdoor exposure and temperature extremes
- Genuine Rheem-Ruud OEM replacement/accessory part (SKU: RTG20270B)
Why Choose Concentric Venting?
Concentric venting technology allows the unit to draw fresh combustion air from outside while simultaneously expelling exhaust gases — all through one compact, sealed assembly. This design improves appliance efficiency, eliminates the risk of combustion air contamination from indoor sources, and keeps installations clean and code-compliant.
Compatibility
- Designed for use with select Rheem and Ruud tankless water heater models
- Consult your unit’s installation manual or contact Jackson Systems to confirm compatibility with your specific model
Specifications
- SKU: RTG20270B
- Brand: Rheem-Ruud
- Vent Type: Concentric Straight Vent
- Vent Length: 11.66″







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