Ideal for entrance roadways, collector roads, and single-sided roads 27 year lifespan dramatically reduces maintenance and re-lamping costs. Precision optics deliver maximum downward street side lumens with uniformity and minimal glare. Compatible with standard roadway arms. Universal adaptors for 1", 1 1/4", 1 1/2" and 2" OD pipe included. Industry-leading 5G vibration rating per ANSI C136.31. Easy-access electrical compartment makes wiring fast and secure. 10-Year no compromise warranty.