These light stabilized unbreakable clear poly-carbonate U. V. filtering sleeves are designed to provide protection in case of fluorescent lamp failure. In addition to containing broken glass particles and lamp chemicals, which protect personnel from injury, the Fluorescent Dimming Sleeve allows you to regulate the light output or reduce lamp glare by simply turning the sleeve with your fingertips to your desired comfort level. End caps are included. For use with F28-T5, F32-T8 & F40-T12 lamps. These sleeves are neither recommended nor guaranteed for use with high output T5 lamps.
When I broke the plastic diffuser on my under cabinet light I started a search for a replacement. I was so very happy to find it at 1800CEILING. The service was excellent and they shipped it the next day. I had the replacement in just a fee days and it is an exact match
They fit perfect.They saved me from having to get new modern lights for our restoration