Use Henry Rolled Furring Strips where flexible material is needed. Manufactured from heavy duty, economical asphalt saturated felt, strips are available in 1/16" thick x 1 5/8" wide in 100' rolls, packaged 5 rolls per bag. Furring strips can be applied with staples or nails to fill in low spots on wood framing or to provide additional backing for casework and trim. Multiple layers of progressively longer or shorter lengths can be applied to achieve the desired built-up thickness.