<p>After-sales Service: We are committed to research and development and production first-class patio products, please rest assured to buy , we are confident that you will love it. If you have any related issues after receiving the product, please reply to us in time. We will reply to you in 6 hours.Reliable Material: Mesh pool cover for above ground pools is made of high quality HDPE material, foldable, strong and wear-resistant, easy to stretch, flexible, reusable and easy to store, pool leaf net hole size is about 0.5 x 0.5 inches / 12 x 13 mm, smaller than the size of a coin, the dense mesh can effectively prevent most of the fallen leaves from falling into the pool, continuously keep the pool clean.For 20*40ft Rectangle PoolsOur leaf net pool cover is 23 x 42.5 feet/ 7 x 13 meterDesigned for rectangular swimming pools of 20 x 40ft / 6 x 12m, our versatile pool leaf net prevents leaves and branches from contaminating your pool water!Installation Steps: The mesh pool cover is very simple to use, first you need to spread the pool mesh leaf cover with your family and friends to cover the pool completely, then use heavy objects to press the net to fix it from moving, such as bricks, stones, and other heavy objects to press the edges of the net to make sure that it won't be blown away easily, even in windy and rainy climates.Practical Pool Net Cover: Our leaf cover for in ground pool is designed to be lightweight and easy to fold for easy storage and use, keeping your pool free from dust, leaves and debris, extending the life of your pool and saving you more cleaning time.</p>