Corn cobs are a fantastic way to take advantage of LED technology without having to install a brand new fixture. The difference between Actively Cooled Cobs and Passively Cooled, are that these utilize an active cooling fan system to provide much smaller dimensions without risking overheating. Actively cooled cobs are ideal for fitting in tighter fixtures where passively cooled are too large. Perfect for use in existing wallpacks, area lighting, garage lights, and much more. Available in 20- 250 Watts.