Hayward Universal H-Series Natural Gas Heater 250K BTU | W3H250FDN Sonar Retro Bulbs The part is gray and

The part is gray and is meant to be placed on the end of the feedline hose

T100M or RC2000M Series mechanisms

Easy installation and maintenance

Dual‑nozzle design (3/8″ inner + 7/16″ outer) produces a wide laminar flow for superior debris sweep

High-level safety/compatibility notes only: Always shut off power to the pump and relieve system pressure before servicing or installing

Hayward Universal H-Series Natural Gas Heater 250K BTU | W3H250FDN Sonar Retro Bulbs The part is gray andThe Universal H Series is an energy efficient, high performance, installation adaptable commitment to the pool service professional. Features: Standard cupro nickel heat exchanger Excellent salt water and chemical corrosion resistance Exclusive "Totally Managed" cupro nickel heat exchanger water flow The same water velocity through all tubes for faster heating Patented header by pass design Up to 18 percent savings by reducing pump run time Common