These energy-efficient LED fixtures deliver a full spectrum of light at 5500? K, making them ideal for early plant growth, propagation and indoor gardening. AgroLED? Sun? LED strip lights feature a passively cooled, thermally stable design that translates into better performance and a longer life span for you and your plants. The included 5-foot power cord and on/off switch make operation easy, while a daisy chain feature means you can plug multiple fixtures into each other for easy installation. Plus, with the included V-hangers, you can choose whether to hang your lights vertically or horizontally. Lumen output: 12 watt 18 in produces 1300 lumens. 18 W 24 in produces 1800 lumens. 36 W 48 in produces 4025 lumens. Includes a 5 ft power cord with on/off switch, (1) daisy chain cord, (2) hanging brackets with ?V? style hangers, (3) flush mount options. UL Listed.