Top positive review
Be sure to keep the plastic...
Reviewed in the United States on April 18, 2016
I purchased these light filters to use in my classroom where I teach Pre-Kindergarten. They are wonderful for reducing the awful fluorescent flicker, and I have noticed they have a calming effect on the students. They even have helped reduce my eye strain from the fluorescent lights. One very important detail I wish I had known was before receiving my shipment is that there is no actual "certificate of conformance for flame retardancy" with this. When the fire marshal came to inspect our school, they made me take them down because I could not "prove" they met the standard. Amazon was awesome and sent me a replacement order to get the certificate, so I could once again use these in my classroom, but there was no "certificate" again. There was, however, on the plastic package a notation that it meets NFPA 701. So if you are using these in your classroom make sure to keep the plastic package to show the fire marshal.