Safety Technology International, Inc. STI-6518 Bopper Stopper with Spring Loaded Hinge - Clear Protective Cover Protects against vandalism and accidental damage,Fast and easy installation Dimensions - 5"H x 3.25" W x 1.75" D Comes complete with mounting hardware and gasket Cover is molded from thick clear polycarbonate material Includes 102721 mounting plate Protects against vandalism and accidental damage Fast and easy installation Comes complete with mounting hardware and gasket Cover is molded from thick clear polycarbonate material 3 year guarantee against breakage in normal use