The last batch of stock, first come, first served. Once it's gone, it's gone! (650-665nm) boosts photosynthesis during flowering and fruiting, ensuring strong plant growth. Wattage– 40W (20W Each Light Bar; 2 pcs) Light size: 62cm *4.56cm*3.65cm (1PCS) Max Daisy Chain Number: 16 Single Bars (110V)/ 32 Single Bars (220V) GlowR40 is suitable for under 500W as a reference. (SF2000 /SF4000 /G4500 /SE4500 /SE5000 /G5000), it can also be horizontally or vertically hung separately for any grow space. Designed to fit most lights for added safety and ease of use.