Zodiac Jandy FloPro FHPF 0.75 HP 1.0 HP Diffuser (R0479702) multitork 5 HP Residential Silent Aire 5 HP Residential Silent Aire blower is designed for compatible spa and bath applications that need a side mount blower in a 240 volt configuration This Raypak R405 Burner Tray With Burner [Sea Level] is intended for service work on compatible Raypak pool and spa heaters where the burner tray section must be replaced This replacement is especially useful when the original diffuser is cracked The R0479702 is a practical service part when a compatible Zodiac or Jandy FloPro FHPF pump needs its diffuser renewed for smoother and more efficient internal flow handling