This was my first effort. It is in a small closet under a stairway. The racks are curved in the corner. The racking is redwood and I put 1/4" redwood panelling on the walls on a 45 degree bias. I have a hole cut in the floor with a SPAN fan recirculating cool air from under the house. Worked OK, but not perfect for cooling.
I just finished building a dining room in my house. I put a big temp. controlled walk in cellar at the end of the room. That one is mahogany.
