I decided to replace my home's 4-foot fluorescent bulbs with 4-foot LED bulbs, and unfortunately, they were much too bright. It was like I was being interrogated whenever I went into my kitchen. I looked around to buy bulbs that were not so bright, but I seemed to have the least bright bulbs available. I searched all over, and I found these. And wouldn't you know it, with these covers on, the new bulbs are about the same brightness as the old bulbs. I really appreciate that these are available, because I couldn't find them anywhere else. Thank you!