D'Nealian Style Double Sandpaper Letters w/ Box

Set of 16 D'Nealian style sandpaper letter phonograms on green wooden boards: ai, ar, au, ch, ee, er, ie, oa, oo, or, ou, oy, qu, sh, th, ue.
Dimensions of board: 8.75 x 7.75 - 4.5 inches