This is a custom-made mahogany sill, screwed down and screw heads covered with wood plugs. Door has a nice wool pile sweep dadoed into the bottom of the door. These sweeps are really nice; quiet, hidden, indestructible and weathertight.
Dale trimmed out all the windows shown here because of very poor craftsmanship and dry-rot. He also did other finish work to get ready for a paint job. Customer was happy, and gave a review on Angie's list.