--Fits a 20 x 40 Ft Pool: Pool Cover Size: 22 x 42 ft. Right Step Size: 4 x 8 ft. The actual cover size is 2 ft larger than the ordered pool size, ensuring no stretching and perfect covering. Before ordering, please measure your pool dimensions first and always select a cover based on your pool size. Ideal for most types of pools at home, garden, or hotel. If pool protection is what you need, then we got you covered.\n\n--High Strength PP Material: This in-ground pool cover is made of soft and tough polypropylene, making it resistant to aging and abrasion-proof. Double-strapped and triple-stitched, our solid swimming pool cover can serve you for a long time.\n\n--Complete Hardware Included: The pool cover comes with brass anchors, stainless-steel springs, and installation tools for easy assembly. Drill and tamp style brass anchoring system permanently secures anchors in concrete. The length of the tension spring is adjustable between 13.7-25.6 in / 35-65 cm, according to the size of .