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Product Featuresarrow_drop_down
- Patented NaviTech™ stainless steel heat exchanger and stainless steel burner with lean/rich stable cleaner burning technology
- 0.81 UEF for all models
- NPN-E is specifically designed for outdoor use only
- Strong residential and commercial warranties
- NaviVent™ concentric 3" x 5" venting
- NPN-U integrated control panel allows you to adjust water temperature, operation status and troubleshooting
- Cascading capable
- Low NOx emissions (20ppm)
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Specificationsarrow_drop_down
- Dimensions: 14 x 9.3 x 23 in
- Gas Connection Size: 3/4 in
- Heating Capacity: 180000 Btu/hr
- UEF Uniform Energy Factor: 0.81
- Venting Concentric: 3 x 5 in
- Weight: 55 lb
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