I bought this for a fixture that is designed for short incandescent bulbs. These bulbs have an orientation that works best with vertically oriented fixtures rather than horizontal fixtures with reflectors (this is a limitation of all LED bulbs). The light emitted is more in line with what you would expect from a lamp labeled 'Daylight' as it is compared to a 4.5K color rating. Perfect for a compact table lamp or pendant lamp in a commercial space. You'll notice a bluish cast if you put them next to a really warm lamp. They are well ventilated and have a very good construction. Very few are available in this form factor and brightness. These appear to be the best available.