Pentair Stack Flue Sensor (Blue) | ETi 250 / ETi 400 / UltraTemp ETi | 475601Z Liner Installation Tools this filter delivers maximum dirt-holding

this filter delivers maximum dirt-holding capacity and superior water clarity in a short-bodied spa filter design

5-Minute Results: Spray-and-rinse formula works fast for busy pool professionals

The Pentair Plug (Sand Removal) (24900-0503Z) is the OEM replacement sand removal plug for the Pentair System 3 filter family

effective operation

Prevents corrosion damage to plumbing

Pentair Stack Flue Sensor (Blue) | ETi 250 / ETi 400 / UltraTemp ETi | 475601Z Liner Installation Tools this filter delivers maximum dirt-holdingThe Pentair Stack Flue Sensor (475601Z) is the OEM replacement flue gas temperature sensor for the ETi 250, ETi 400, and UltraTemp ETi series pool and spa heaters. This is the blue sensor confirm the color of your existing part before ordering. IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high