The Intex Krystal Clear 56637 Above Ground Cartridge Filter Pump is a reliable and efficient pool pump designed for above ground pools. With a maximum flow rate of single-speed, this filter pump is suitable for keeping your pool water clean and clear. The product features the trusted Intex brand and models 28637EG, 34338.2, and 56637, ensuring compatibility with your pool filtration system. Perfect for maintaining a well-maintained and crystal clear pool, this new in open box filter pump is a must-have for any pool owner. Box was opened and contents reviewed. Not hooked up. Sat in heated garage for a year. Pool didn’t survive winter.