Navien 30010604A Outside Vent Kit for all NPE units
The Navien 30010604A is an outdoor vent cap for use with all of the NPE tankless water heaters:
Units made before November 2014 did have a different vent kit (30010605A). Now, the item number 30010604A is good for all NPE models made after Nov. 2014.
Installation Help and Recommendations
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