Automatic sprinklers extinguish a mattress fire at the Sealy testing lab in Trinity, N.C., Wednesday, June 20, 2007. The federal Consumer Product Safety Commission wrote new flammability standards aimed at reducing the number of mattress fires started by open flames such as candles and lighters. The commission calls it the most expensive regulation handed down to any industry in its history, and one it hopes will prevent as many as 270 deaths a year.