The Universal Stopper (STI-13300NC) is a clear cover with an enclosed flush backbox. It offers protection against physical damage (both accidental and intentional), dust and grime as well as severe environments inside and out (Type rating pending). The indoor/outdoor cover fits over wall mounted electrical boxes and helps seal against damp or dirty locations. It is also useful when mounting on an uneven surface. Other mounting options for the cover include surface or flush mounting frames, enclosed backbox with sealed mounting plate or enclosed backbox with open mounting plate. The Universal Stopper is designed to comply with ADA and is less than 4 inches in depth. It offers a three year guarantee against breakage of polycarbonate in normal use and is ADA compliant.