The Rainbow 300-19 is an Automatic Chlorine/Bromine Feeder perfect for use in any pool or spa. Capable of sanitizing pools up to 52,000 gallons, the 300-19 chlorinator is a perfect fit for many applications.

Complete with a 19-inch chamber offering double the capacity, it efficiently uses slow-dissolving Trichlor or Bromine tablets, ensuring easy and automatic pool or spa sanitization.

This Pentair rainbow feeder installs on the pressure side of your pump, downstream of the filter and heater, making installation straightforward. Featuring an external fine control valve, it allows precise feed rate adjustments, while its enclosed design prevents fumes. 

Ideal for new or existing spas, this feeder is NSF listed and includes a protective check valve to safeguard your pump and heater from chlorinated water back-up.