Chemical Chlorine Dispenser System P05345 P03821 Chlorine Dispenser Replacement for Lay Z Spa Hot Tub Spa1Wide Compatibility: With part number P05345 and P03821, this chemical chlorine dispenser system replacement part is perfectly fit for Lay Z Spa pools. 2Water Purification: The chemical chlorine dispenser helps achieve even distribution of chlorine in the pool water, effectively purifying the water and keeping it clean. 3Durable ABS Material: Made from premium ABS material, the chemical chlorine dispenser replacement part ensures durability and high reliability for long lasting use. 4Easy Installation: Designed for easy installation, users can effortlessly replace and install this chemical chlorine dispenser replacement part, saving time and effort. 5Regular Maintenance: Regularly replacing the chemical chlorine dispenser parts can extend the lifespan of your device, making it suitable for home spa hot tub water treatment.