who is the manufacturer of the shirt rack...totally rocks and needs to be in his walk In

Just came across this photo and saw your question was never answered. Hopefully you already found your answer. If not, the shirt rack is made by Rev-A-Shelf (spiral clothes rack). You'll need minimum of 48" on each side of the corner to accommodate this but it's totally cool!

That appears to be a "Timeless" wardrobe from Studio Becker headquartered in San Francisco. As far as depths of shelves go, 24" seems to be considered a "full-depth" shelf, where as "half-depth" is typically 18" deep. Widths of shelves (L-R length) can be many different widths, but the standard ones I've seen have been 12" for one stack of sweaters or pants, 24" will hold 2-3 stacks, 36", 48", although 48" is a very wide shelf and I wouldn't suggest using too many of them unless a nice thick material is used to prevent bowing. I would suggest using a combination of 12-36" shelves for best usage. For hanging storage just make sure the rods are at least 11.5" to allow for standard hangers to have space between the back panel/ wall, and the hanging items. Feel free to ask me any more questions as I worked for Studio Becker, and can shed some light on industry standards and custom storage ideas!

What is the material used for the selves and drawers. Is this particle board?

I am considering having built-ins for two large walk-in closets in the master bedroom. I am trying to find a tuck away 4ft. to 5ft mirror in length that would lay flat against the side of the cabinet when not in use. It would pull out similar to a pocket door on a rail and fold over 90 degrees to lay flat in front of the built-in portion of shelves/drawers. When finished with its use, one would pull it straight, push it to slide back into the side of the cabinet and would be "tucked away" out of sight. It would take up only about 2 inches of space.

Any suggestions where I could find this mirror with hardware?

Thanks