R-12 FIBERGLAS® Insulation. 16" x 48" x 3.625" and covers 106.7 sq. ft. For steel stud walls. 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.