| Comparison : | Item # U-50T-55FR-3N, Light Duty Commercial Ultra-Low NOx Energy Saver Gas Water Heaters Item # U-50T-55FR-5N, Light Duty Commercial Ultra-Low NOx Energy Saver Gas Water Heaters
 Item # U-65T-55FR-3N, Light Duty Commercial Ultra-Low NOx Energy Saver Gas Water Heaters
 Item # U-65T-55FR-5N, Light Duty Commercial Ultra-Low NOx Energy Saver Gas Water Heaters
 
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