Size 1/2"(12"W x 16"L) Mr. Pleater Board, add perfect pleats to fabric, fast and easy. Only used once. Started pleating my fabrics through a factory! Materials: Cotton, Seersucker, Interfacing, Stitch Witchery, Heavy duty wallpaper line Make perfect pleats with the Mr. Pleater Board. Tuck fabric over/under the louvers, then press and set. The board makes up to 24 rows of 1/2" pleats, with a 1/2" deep return, and measures 12"W x 16"L