The Spectra IV SE Heavy Duty dome system is ideal for installations where structural integrity and resistance to vandalism are a priority. Dual wall construction, added thickness, and a geometric design enhance the overall durability of the enclosure. Three Heavy-Duty Spectra IV back box models are available. Spectra IV SE Heavy Duty has all the features of the Spectra IV SE dome system and is also compatible with all Spectra IV SE and Spectra IV dome drives. For installations that face the highest threat of vandalism, models are available with a protective cage, designed to increase the protection of the unit’s bubble with minimal obstruction of the viewed scene. The camera automatically focuses through the cage’s bars at medium to high zoom settings, eliminating interference.