cedar-picket-birdhouse-free-plans-render-006 Created By: Allison  | Updated: April 5, 2021 | Leave a commentThis post and photos may contain Amazon or other affiliate links. If you purchase something through any link, I may receive a small commission at no extra charge to you. To place the interior walls/dividers for the birdhouse measure the inside from the left at 8” and 16”. Lightly glue 4.5” pieces into place. Screw into place from the bottom of the piece.