Hayward Universal H-Series Natural Gas Pool Heater, 400,000 BTU, Low NOx | W3H400FDN Commercial reducing tangles and kinks so

reducing tangles and kinks so you spend less time wrestling with the blanket

weak ignition

ensuring your pool equipment stays pristine for years

Product type: Classic French Pocket Swimming Pool Mattress

stretching and wind uplift

Hayward Universal H-Series Natural Gas Pool Heater, 400,000 BTU, Low NOx | W3H400FDN Commercial reducing tangles and kinks soHayward W3H400FDN Universal H Series Natural Gas Pool Heater 400,000 BTU Low NOx The Hayward Universal H Series W3H400FDN is the highest capacity heater in the H Series lineup, delivering 400,000 BTU of heating power for large residential pools and high demand spa systems. Designed for rapid heat up performance, this natural gas heater allows pool owners to reach desired temperatures quickly while maintaining efficient operation. The heater features a