Rx Clear Radiant Sand Filter | For Above Ground Swimming Pool | 19 Inch Tank | 175 Lb Sand Capacity | Up to 21,000 Gallons CLEAN AND SAFE WATER- This filter is designed to handle the filtration needs of many of today's pools. It provides an efficient, easy-to-use operating system that will assist in keeping your above-ground pool water crystal clean and safe for swimming. DURABLE AND ECONOMICAL- The core of these systems is the one-piece blow-molded tank. The interior consists of the standpipe and laterals. This filter tank comes with a 3-Year limited warranty against manufacturers defects. Filter media and hoses are sold separately. EASY TO INSTALL- Labeled ports on the 6-way top mount filter valve are clearly visible for the pump and return. Comes with 1.5 inch threaded connections, a filter base and users manual. Includes 6-position valve, this tank holds 175 lbs of sand. FILTER MEDIA OPTIONS AVAILABLE: For optimal performance, this 19 unit requires the following media amounts: 4 Boxes RX Clear Luster Filter Media, 88 lbs.of Zeo-Clear Filter Media or 175 lbs of traditional Grade 20 Silica Sand WILL IT FIT MY POOL?: The Rx Clear Radiant 19-inch sand filter is designed for above-ground pools measuring up to 21,000 gallons.