Coopers line of polycarbonate plates feature a rugged construction reduces installation cost due to less plate breakage. These plates resist bowing to provide a smooth, flat installation. They feature an exclusive timesaving Screw-Catch feature that holds mounting screws captive and simplifies installation. They are UL and cUL listed as well as CSA certified. Polycarbonate wallplates are virtually unbreakable with high structural rigidity, long-term form retention, plus superior impact and abrasion resistance. Their operating temperature is between -40C to 70C. Their heavy-duty construction provides outstanding performance throughout a home.