Keeps out debris and sunlight. Fits 18 Foot Steel Pro Frame Pools. Cancelling Your Order: Your order is important to us and will be processed immediately. Select the reason for the return. The item "Bestway 18 Foot Round Above Ground Swimming Pool Solar Heat Cover (2 Pack)" is in sale since Tuesday, June 2, 2020.This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Pool Equipment & Parts\Pool Covers & Reels". The seller is "spreetail" and is located in Lincoln, Nebraska. This item can be shipped to United States, Canada.