R-31 FIBERGLAS® Insulation. 16" x 48" x 9.5" and covers 42.7 sq.ft. For attics and floors above unheated areas. Friction-fit batts are easy to install and offer outstanding thermal performance providing savings on heating and cooling costs. Non combustible. Made in Canada with a minimum 73% recycled glass content, SCS Certified, GREENGUARD Gold certified for indoor air quality and validated to be formaldehyde free.