The shelves are a custom design I helped design with a closet company. The holes make the shelves adjustable. This attic was unfinished and my client decided to finish the space by adding drywall, carpet, storage shelving and cabinets for off season storage. Atlanta has a lot of custom closet companies to choose from. This was installed by Spacemakers. I also like Artisan Custom Closets, Closets by Design and Creative Closets. I always recommend getting multiple estimates & designs from multiple companies to choose what you like best. They all have something unique to choose from too.