The Fabrico Sun Dome for 15' x 25' Oval Above Ground Pool is the ultimate solution for enhancing your pool experience. It lengthens the swimming season by trapping heat and maintaining warmer water temperatures, protects the pool from debris and pollutants, reduces chemical usage, fits most above ground pools in round or oval shapes, helps prevent water evaporation, and is easy to assemble with two people in 2 to 3 hours. It's important to order the proper number of panels for your sun dome by counting the number of vertical side supports on your pool.