Nice dispenser. It will hold up to four 3" chlorine tablets. I did come across one problem though. Letting it float free throughout the pool allowed it to get stuck in the opening of the skimmer. This caused a decrease of water getting to the pump. Now this would eventually cause your pump to overheat. So I have to keep it teathered to the ladder and let it float free when the pump is off. I seem to have done better just putting a couple tablets directly in the skimmer. But all in all it does what it suppose to.