Economy Channel Standard, 120V Bronze Finish Tri-phosphors also increase the lumens/watt

Tri-phosphors also increase the lumens/watt output of  the lamp

"Enjoy all the benefits of advanced LED energy-saving technology with Feit Electric PAR38/950CA10K/MP/4 multipack PAR38 75W high-CRI LED light bulbs

It is both Energy Star and ETL certifiedINCLUDED IN THE BOX: (1) 15 WATT DIMMABLE SQUARE FLUSH MOUNT CEILING LIGHT (7" DWNLGT) 2700K APPLICATIONS: CEILING FIXTURE

Sunlite BTR 1000T7 120 VOLT 1000 Watt T7 Lamp P28s Base Bulb: T7

Economy Channel Standard, 120V Bronze Finish Tri-phosphors also increase the lumens/wattSpecifications; Snap on components for easy assembly and maintenance; Versatile end plate doubles as coupler for continuous row mounting; Available in lengths from 18 to 96 inches; Surface, stem or chain mountableApplicationsFluorescent channel fixture. For use in indoor applications such as factories, warehouses, workshops, utility areas, coves and public buildings.