WC504 Size: 18' Features: -Round leaf net.-Made of durable, woven polyethylene mesh.-3-foot overlap.-Makes spring opening quick and easy.-Tight mesh traps even the smallest leaves before they reach your winter cover. Includes: -Includes a cable and winch to hold it securely in place over your winter cover. Options: -Available in 16', 18', 21', 28' and 33' sizes. Color/Finish: -Color: Black. Collection: -Defender collection. Warranty: -4-year manufacturer's warranty.