I found the perfect 2 ¼” trim x ¼” trim at Lowes to disguise the gaps to perfection, plus the greater width gives the cabinets even more of a custom look. We also added crown molding to the top for a finishing touch. The vertical pine trim was easily attached with a nail gun then primed with Zinsser (I always use oil based primer on raw wood.) I used paintable caulk to fill in any gaps between the baseboard, crown, and bookcase edges. Two coats of paint unified the vertical trim, baseboard, and
