Pentair Max-E-Therm 333 BTU Propane Gas Heater || SR333LP Complete IntelliCenter Bundles Compatibility: Designed for Hayward FD

Compatibility: Designed for Hayward FD pool heaters models 250

Always replace all grids at once to maintain uniform flow

It will turn on every 3 minutes and 30 seconds to pull the cleaner out of tight corners or trouble spots

Ensures a tight water seal between the pump housing and the motor

Durable plastic construction for efficient debris filtration

Pentair Max-E-Therm 333 BTU Propane Gas Heater || SR333LP Complete IntelliCenter Bundles Compatibility: Designed for Hayward FDPentair Max E Therm 333 BTU Propane Gas Heater SR333LP Save money and energy with the Max E Therm High Performance Heater. Already known as being dependable and efficient, Max E Therm now offers smart features and an optional energy saving automatic bypass to help you ensure your pool is ready whenever you are. Smart connectivity via the Pentair IntelliCenter Control System enables management of pool functions from across the yard or around the globe.