Use STOPP FILT rug underlay with anti-slip for increased safety and comfort; to be placed under the entire rug.This product has been tested for domestic and public use.Meets an overall fire classification of Class Efl (products capable of resisting a small flame), according to EN 13501-1: 2007+A1:2009.Meets the performance requirements of 16 CFR part 1630 (for rugs with one dimension greater than 1.83 m (6 ft.) and a surface area greater than 2.23 m2 (24 sq. ft.)).