Will maintain up to a one-hour fire rating when installed in a UL L500 series Non-Ice fire rated floor/Ceiling assembly. Progress Lighting is pleased to present over 5,000 lighting fixtures offered in our catalogue, the largest single source for residential and commercial lighting. For over 100 years, Progress Lighting has been committed to providing a diverse selection of high quality lighting fixtures - earning us the reputation as the #1 decorative lighting line among builders and remodelers. We understand what it takes to be a leader. offering products that deliver aesthetic appeal, stellar performance, easy installation and value.