The 25" x 48" (64 x 122cm) wall grid with 5½"W x 2"H boxes can be suspended from ceiling or wall bracket. Includes posture score sheets, suggested procedures, instruction manual, suspension cord and plumb bob for alignment. The desktop scanner with angle sight (included) can be used for more precise posture appraisals. Grid boxes are 2¾"W x 2¾"H. Latex free.