KD Navien® 30010537A

KD Navien® Flow Sensor, For Use With: NR-180, NR-210, NR-24, NR-210A, NR-240A, NP-180, NP-210, NP-240, NP-180A, NP-210A, NP-240A, CR-180, CR-210, CR-240, CR-180A, CR-210A, CR-240A, CC-180, CC-210, CC-240, CC-180A, CC-210A, CC-240A Tank Less Water Heaters