This Skybox has only 10prims, tintable windows, lock-door. The footprint is 20mx10m.
The building is full linked, so its easy to setup, rezz it-finished.
You can change Color and Texture if you want.
The windows have 4 different transparency settings, you click on a switch to change it. The inner side of the windows is brighter than the outside, so you can always see out, but on the darkest level nobody can see in.
The Door is lockable, just say "lock" or "unlock" when you stand close to the door (you must be the owner). Closing time and sounds are modifyable.
The building comes with a Instruction-Notecard, there you find more Information, also how you can set it up as a skybox.
You can visit this Skybox in my Mainstore:
Amethysta Designs and Amethysta Estate:
http://slurl.com/secondlife/Barefoot%20Beach/35/35/252