These bulbs cost extra money. This is a quality product that emits the same intensity as any black light lamp. Many cheaper lightbulbs can work if you're just illuminating a small painting or area, but they don't provide much light. I needed them for the track lighting with my large imprint. (The print is not yet hung on the wall in this photo) The only reason I didn't give 5 stars is because 1 out of 6 doesn't work. Haven't contacted the company yet and will change my rating when they ship a replacement.
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