PG4434: 28w Quad Compact Fluorescent Lamp. GX32d-3 Base About Progress Lighting Progress Lighting is pleased to present over 3,000 lighting fixtures offered in their catalog, the largest single source for residential and commercial lighting. For over 90 years, Progress Lighting has been committed to providing a diverse selection of high quality lighting fixtures - earning them the reputation as the #1 decorative lighting line among Builders and Remodelers. Progress understands what it takes to be a leader...offering products that deliver aesthetic appeal, stellar performance, easy installation and good value. Progress Lighting also responds to the ever-changing needs of the lighting industry with extensive research and development programs that ensure their high standards of quality and innovation for the home and commercial applications. Headquartered in Spartanburg, SC, Progress Lighting has four distribution centers located throughout the country that support one of the largest networks of electrical distributors and showrooms in the U.S. All are stocked and ready to serve your immediate residential and commercial lighting needs.