A galvanized steel shelter box shields your 9200 series NRG Logger from the elements and prevents vandalism. Designed specifically for 9200 series NRG Loggers, the shelter box comes pre-drilled for logger mounting screws (included with logger). Rugged steel hasps can be padlocked, and U-bolts in 3 sizes [89mm (3.5\"), 114mm (4.5\"), 152mm (6.0\")] are included for mounting the shelter box to an NRG TallTower.