This Universal Stopper® model is an indoor/outdoor protective low profile cover without horn that helps protect devices such as pull stations and other fire safety devices without restricting legitimate operation. This versatile cover with enclosed flush back box offers excellent protection against physical damage (both accidental and intentional), dust and grime as well as severe environments inside and out. Molded of clear, thick, UV-stabilized polycarbonate material, the cover is backed by a three year guarantee against breakage in normal use.