The Unicel C-503 Replacement Filter Cartridge is a round, 50 sq. ft. filter designed for above ground pools. Made of plastic, this filter cartridge features a 5-inch diameter and is suitable for use in Marquis and Cal Spas. The set includes one cartridge filter, providing a convenient and effective solution for maintaining clean and clear pool water. With the Unicel brand known for quality and reliability, this filter cartridge is a dependable choice for pool owners looking to keep their pools in top condition.
eBay