Frameless mirrors offer clean lines to complement every type of interior design and are easy to care for. One piece can be up to 28 sq. ft. (2.6 m2), as long as either H or W dimension is less than 84″ (2134mm). Mirrors larger than 28 sq. ft. (2.6 m2) or with either linear H or W dimension larger than 84″ (2134mm) shall be supplied as multiple pieces. Made of 1/4″ polished plate glass.