deflecto CM14443F SuperMat Frequent Use Chair Mat Medium Pile Carpet Beveled 46 x 60 Clear Protective vinyl chairmat safeguards and protects carpets from wear and tear. Medium weight chairmat for frequent use on carpets up to 1/2" thick, Medium Pile; choose a higher pile chairmat if usage is over 6 hours. Easy-glide rolling surface provides effortless chair movement. Studded, vinyl and beveled chair mat for medium weight carpeting Maximum clarity and transparency, allowing the beauty of carpeting to show through Smooth beveled edges for easy roll on and roll off Textured top surface is slip and scuff-resistant Unique notched stud design grips carpet without piercing or harming carpet backing