According to new research from Leggett & Platt, many low-cost imported mattresses sold online fail federal flammability standards. It also says some even attain dangerous heat release rates in violation of U.S. law in as little as two to four minutes after exposure to an ignition source, according to test results submitted to the U.S. … Continue reading Leggett & Platt study says several online mattresses fail 1633 flammability standard