Chair Mat, 36"x 48", Clear, 20"x 12" CEB3648WLC Chairmats. Designed specifically for Berber carpeting, the modern office's most favored floor covering. Recommended for pile and pad that measures 3/8" thick - which include most Berbers. Molded bumps grip the top of the carpeting without snagging, no matter what the style. SOLD BY THE EA