Poplar (Acer saccharum) Ukulele Top, Back and Sides 584941 Approximate Dimensions: Tops & Backs:11 11/16" x 8 3/4" x .153" Sides: 18" x 2 3/8" x .157" Photo is an example we have a number of these sets that are all very similar. Sets include top and back and sides. Tops and backs are all one piece.