Outdoor Patio String Lights - Commercial Grade, 21 Feet Strand, 10 Edison Style ST18 Bushwick Bulbs, Weatherproof, Heavy Duty, Connectable, Dimmable - ETL Listed DURABLE & VERSATILE &#10003; - Our 21 foot commercial-grade string light has a durable black cord that is suitable for both indoor and outdoor use. String up a strand or two to add extra light and fun, retro ambiance to your backyard, patio, restaurant or wedding. BULBS INCLUDED &#10003; - Includes 10 of our vintage-inspired 40W Bushwick Bulbs. These full-sized (E26) Edison bulbs emit a cozy, warm white glow and are fully dimmable (dimmer switch not included). WATERPROOF &#10003; - This string light is made from a heavy duty rubber designed to withstand the elements. In addition, each socket contains a rubber gasket purposely placed for a weather-tight seal. CONNECTABLE &#10003; - Total length: 21 Feet | Lead wire: 2 Feet | Bulb to Bulb: 2 feet | Connect up to 5 strands to illuminate any space. CUSTOMER SATISFACTION GUARANTEED &#10003; - LampLust is looking out for your satisfaction. Please contact us through seller messages for all questions or concerns. This 10-Socket outdoor string light has a 90-Day Warranty.