The Phuzion® PHG LED high bay will elevate your outdated HID or fluorescent lighting to create an environment that is comfortably lit, protected from contaminants, and is virtually maintenance-free. Energy and Maintenance Savings Long-life LEDs help to cut energy usage by 50% or more and the added lumens and options allow you to boldly use the PHG where you never have before! The Phuzion PHG LED High Bay is for light industrial applications including light manufacturing, warehouse, automotive, retail, food storage and gymnasiums. Prismpack® Optics - Prismatic borosilicate optic with sealed aluminum cover to minimize dirt accumulation and improve optical efficiency. Use when uplight is not desired or require and custom optics deliver up to 12% uplight to help reduce the cave-like effect common in high bay applications.