Sold as 1 Each. Lipped chair mat 51" x 48" with 25" x 12" lip. Straight edge with rounded corners. Lies instantly flat from delivery for immediate and effective use. No need to wait for the chairmat to flatten. Made from 50% recycled eco-friendly enhanced polymer for high impact strength and long-life durability - 0.087 inches thick. Eco-friendly manufacturing with 50% of our manufacturing site’s energy coming from on-site and external renewable sources. 100% recyclable. Free from Phthalates, tin, lead and cadmium. Child and pet safe. GreenGuard Gold certified. Please note, due to the manufacturing process this product has a +/- 5% size tolerance. All measurements are rounded to the nearest inch. Gripper back for use on standard pile carpets up to 3/8". 5 year manufacturer limited warranty. Our enhanced polymer floor protectors will not sink, crack, curl, cup, discolor or smell. The high clarity allows flooring to show through for an attractive and highly effective addition to your office or home environment. Compatible with under floor heating systems.