Great idea for hiding guns in the house if you don't have a gun safe. Or even other items you want to keep safe! It took me a little while to understand this. The shelf unit slides behind a mirror. I thought it was a passage to a hidden room.
Stow your jewelry or other special items in your pantry (who would guess to look there?) by placing a smaller container within a glass jar. Fill the space between with corn kernels, and it will blend with your unperishables. Get the tutorial at Not Just Any Bee » - GoodHousekeeping.com
I've seen this in high end townhomes in my area. turn your fireplace or media built in shelving into hidden storage with Covert Concepts products of custom secret doors and stealth wall concealed storage