Hayward FDXLTER1930 FD Thermistor Replacement for Hayward Universal H-Series Low Nox Pool Heater sponge Quick Latch mechanism makes it

Quick Latch mechanism makes it easy to drop down the respirator from face without removing head straps

Specially engineered heat vents and expansion slots prevent blade distortion and increase blade life

Fits hayward pro series sand filter models s180t

The addition of Vapor Shield "military grade" anti-fog technology keeps these lenses completely resistant to fog

Hayward FDXLTER1930 FD Thermistor Replacement for Hayward Universal H-Series Low Nox Pool Heater sponge Quick Latch mechanism makes itHayward FDXLTER1930 FD Thermistor Replacement for Hayward Universal H Series Low Nox Pool Heater Replacement fd thermistor Fits hayward universal h series low nox pool heater models h150fdn, h150fdp, h200fdn, h200fdp, h250fdn, h250fdp Also fits hayward universal h series low nox pool heater models h300fdn, h300fdp, h350fdn, h350fdp, h400fdn, h400fdp Weight 4 pounds