Keep your pool water clear, clean, and inviting with this durable Fiberglass Sand Filter. Designed to provide efficient filtration and easy operation, it uses specially graded filter sand to trap dirt, debris, and impurities as water circulates through your pool system. Waterco's Commercial Fiberglass Filters are made from continuous strands of high quality fiberglass filament, wound under controlled tension to create a seamless, impervious vessel. This produces a filter that is free from welds and seams, or special tank linings that typically corrode or electrolyze.