To light up a warehouse, work-shop, furniture shops, indoor or outdoor area Bay2 High Light is an excellent option. It comes with a 2-year warranty. 100watts is brighter than 150watts, 150watts is brighter than 200watts. Big coverage,100w can cover 25 x 25ft,150w can cover 35 x 35ft,200w can cover 45 x 45ft at 20ft height. High Bay Light s Intelligent design which is energy saving and long lasting.