The 36 SqFt Plus Filter Element is designed for use with the FNS Plus and American pool and spa Diatomaceous Earth (D.E.) filters. Engineered with durable, high-quality materials, this filter element offers long-lasting performance and ensures superior filtration efficiency. This element is ideal for maintaining crystal-clear pool water by capturing fine debris and contaminants as small as 2-5 microns, optimizing water flow, and reducing strain on the pump.