The ProZorber is a Guilford fabric-wrapped 6-7pcf rigid fiberglass (Owens Corning 705) panel with a scrim backer. Choose the ProZorber for the most stylish, elegant look for your studio, rehearsal or broadcast environment, and even for your living room listening area! Features include: · NRC .95 for 2 inch. panels and NRC .80 for 1 · The square edges offer more absorption than beveled edges - over 8% more for the 1 inch. and nearly 17% more for the 2 inch. · Includes impaling clips for permanent and semi-permanent installation · Optional 2 inch. offset impaling clips for increased bass absorption · Over 30% savings compared to the current popular products · Class A fire-rated · 100% made in the USA · Each panel arrives in a custom-sized white cardboard box with prominent red label.