Image 1 of 1 11 inch INTERCHANGEable SIGN with two inserts $15.75 WOOD CUTOUTS Birch wood ¼ inch in thickness.Real wood. so it may have knots on back sides. Fronts will always be smooth Add To Cart Added! WOOD CUTOUTS Birch wood ¼ inch in thickness.Real wood. so it may have knots on back sides. Fronts will always be smooth