Seda's WAVEL series LED high bay lights unveil its unique optical design to have beam angle changeable, no need to change lens but simply rotate slide block to have three beam angles interchangeable.One WAVEL LED high bay light can be used into at least three lighting space and you can adjust as you wish just by single rotation.Recently, the beam angles of SEDA WAVEL LED high bay light can be interchanged between 60 degree, 90 degree and 105 degree, you can use them into narrow and wide beam angled applications as you wish.100W & 150W WAVEL Series LED high bay light: Beam angle changeable one fixture for 3 beams 60-90-105deg 130-140LPW full 5 year warranty, what is beam angle changeable mean? you are welcomed to inquire us for more to [email protected]