Unequalled in performance, the rugged cast aluminum 4"x4" Imperial solar post cap is designed using 3 high output LED"s to provide a brilliant white light, with contemporary design. The powder coated finish means no future painting. White High Performance solar lights_stays lit for up to 10 hours Lights up automatically every night_auto_off switch 3 High output LED"s for brilliant white light Manufactured from durable cast aluminum Will fit over an actual 4"x4" PVC or nominal 4"x4" wood post (3.5"x3.5" adapter included) Patent No. D624,227S