Sta-Rite is a branch of Pentair Inc., a company that has a reputation for durable, reliable swimming pool equipment. Sta-Rite pool filters are available in the three main types of pool filters: Cartridge, diatomaceous earth, and sand. The cartridge Sta-Rite pool filters are equipped with a unique modular media. More than just a basic cartridge filter, Sta-Rite’s modular media line uses advanced technology for balanced flow and efficient filtration. But they’re still extremely easy to use and easy to maintain.Because Sta-Rite’s swimming pool filters are made with modular media, they can handle up to 15 times more dirt and other particles than some sand filters of equal size, to deliver maintenance-free performance for the whole season. These modular media filters are ideal for small inground and above ground swimming pools.