How do I correctly store 10 new preamps?


I came accross a handful of brand new 25 year old Phase linear preamps.
I sold a few and now I have to focus on work so I have to store them for a year. Is the attic ok? The cellar? Keep in mind that i have a 5 foot stack of them new in boxes so its not like I can just stick them in a corner of the living room.
Thanks,
sirsnapalot
Just wanted to get it in black and white to show wifey that we now have a new coffee table base and matching nightstand. I didn't steel them, they came from a warehouse of audio equipment and were buried behind newer stuff. So far, the 10 I sold all have been perfect to my knowlege. Not sure what mattybumpkin means?
I thought the living room was a no-go from the post 65.Your right about one thing though,cheers,Bob