GLI Secur-A-Pool 18 FT X 36 FT Rectangular Mesh Safety Cover System with 4 FT X 8 FT Left Step 2 FT Offset, Green GLI Secur-A-Pool Actual Cover Size 20-Feet by 38-Feet Rectangular Mesh Safety Cover System with 4-Feet by 10-Feet Left Step 2-Feet Offset, Green Mesh construction filters water and snow through, screens out leaves and other debris Made from tough UV inhibited polypropylene fabric Stainless steel and brass hardware, wont rust or corrode Prevents accidental intrusion by children and pets