Splash Net Express Arctic Armor Mesh Rectangular Safety Cover for 20ft x 40ft In-Ground Pools with 4ft x 8ft CENTER Step Sections- 12 Year Warranty category: Home / Green 12-Year Mesh Safety Cover For 20' x 40' Rect Pool With Center End Step Color: Green Pool Size: 20' x 40' Cover size: 22' x 42' short_description: Guards Your Children & Pets As It Protects Your Pool!