Amazon.com : X Home 60-inch Grill Cover for Weber Genesis 310/330, Rec Tec RT-700, Genesis II 315/335, Charbroil, Nexgrill, Brinkmann, Broil King and More 3-5 Burner BBQ Grill, Universal 56-60" Gas Grill :
Heavy Duty Bbq Grill Cover Gas Barbecue Outdoor Waterproof Uv Protection Grill Cover Heavy Duty Waterproof Bbq Grill Cover - Bbq Accessories - AliExpress
Weber 53-in W x 45-in H Black Polyester Charcoal Grill Cover in the Grill Covers department at Lowes.com