The E35 is a Professional-Grade Salt Chlorinating System for swimming pools up to 40,000 gallons. It's a 7-Series Salt Chlorinator designed to offer you outstanding and reliable chlorination, reverse polarity self-cleaning technology and low maintenance with ease of use and installation Engineered with durability for residential swimming pools, this salt chlorinating system can last in the harshest of climates. Paired with the conveniently clear salt cell, you can easily tell when it's time for a replacement. It features an Exclusive Boost Mode that allows you to shock the pool using the systems control panel. Automatically disinfect and sanitize your pool's water with the E35 Salt Chlorinator with Salt Cell for pools up to 40,000 gallons.