Arctic Armor Mesh Rectangular Safety Cover for 18ft x 36ft In-Ground Pools with 4ft x 8ft CENTER Step Sections- 12 Year Warranty Color: Blue (WS365BU) category: Home / Blue 12-Year Mesh Safety Cover For 18' x 36' Rect Pool With Center End Step Color: Blue Pool Size: 18' x 36' Cover size: 20' x 38' short_description: Guards Your Children & Pets As It Protects Your Pool!