The Pentair 150084 Black Long Lateral Replacement Pool or Spa Filter is designed to enhance the performance of your pool or spa's sand filter system. This lateral replacement filter fits sand filter tanks of sizes 16" and 19", and meteor filter sizes 18" and 20". It functions by providing a durable, high-efficiency filtration solution, ensuring that your pool or spa remains clean and ... https://www.usapoolshop.com/150084-pentair-black-long-lateral-replacement-pool-or-spa-filter