1 3x21 x 52 Neptune Pool. (ask us about other sizes). Installs Above, Semi & Inground. Retains Suns Natural Heat In Pool.The item "NEW Above, Semi, Inground 13x21x52 Rectangle Swimming Pool 3 Insulated" is in sale since Friday, May 14, 2021. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Swimming Pools\Above-Ground Pools". The seller is "todayspool" and is located in Greentown, Pennsylvania. This item can be shipped to United States.