The lattice is a concept based on the A frame of grand pianos. The back and sides are kept rigid by means of a sturdy A shaped frame and the top is thinned as much as possible to allow the top to vibrate generously. Lattice delivers a lot of volume a tremendous clarity.

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23.6 in X 51 in

Radiused or flat fingerboard?
The radiused fingerboard has been around the acoustic and the electric guitar since day one. The same is true for most instruments of the Stringed family of instruments (violas, violins cellos, bass). Radiusing (image above) makes barre and left hand stopping A LOT easier. The only drawback is that you will NEVER want to play a  flat fingerboard after that. If you are having your custom guitar built, I am all pro radiusing the fingerboard.  The standard fingerboard is flat.