Safety Signs: Emergency Exit Only- Door Alarm Will Sound, 50% Recycled Plastic, 10" x 14". Plastic signs combine standard, reliable performance with 92% recycled content to create a dependable, Earth-friendly material. Contains 50% recycled content, and very easily recyclable (Code 2) unlike competitor signs made of polystyrene (Code 6). Any recycling center will accept it. The .055" thick polyethylene, matte surface with resist impacts and offers slight flexibility. <br>Rounded corners and 3/16" mounting holes on most sizes. <br>Service temperature range is -90F to 168F.