Vandal Resistant Housing The exterior of the VB-C500VD is comprised of high-shock resistant materials, reducing the possibility of outer damage caused by vandalism. The base is made of a heat-resistant polycarbonate and ABS mixture, the body from tough alloyed aluminum, and the dome cover casing is made of strong polycarbonate plastic. Multi-Directional Shock Absorber Canon’s unique shock absorbing mechanism on the camera unit effectively eases the effects of high impact blows to the camera housing, protecting the camera inside.