The Blog Cabin 2011 kitchen was designed and remodeled with new hanging wall cabinets, therefore, the cabinets were adjusted downward to accommodate the girder wrap (Image 1).
If you are working around cabinetry, allow 1/4" additional space for the construction adhesive. It might be helpful to remove the wall cabinet first, then reinstall it once the girder wrap is painted or stained. Only a handful of wall screws keep the wall cabinet secure, so it's easy to remove.
In preparation to cut the girder wrap wood, accurate measurements are needed for the span (wall to wall), depth (ceiling to bottom of girder) and bottom width measurement (including the outside cuts).
Using a table saw with an assistant, rip the two side cuts to the depth dimension, which, when attached, is flush with the bottom of the girder.
Rip the bottom to width, which, when attached, will be flush with both outside corners. Pre-cut the side and bottom wood to the span lengths using a circular saw or chop saw and bring the three long pieces into the room for installation (Image 2).