I picked up a fistfull of little dessicant packs at the local surplus store.  

Each is made of heavy brown paper, and printed on the outside is "1 Unit".  

There were others which were bigger and biggestwhich said "2" or "4" units respectively.

Does anyone have any idea how to translate the "units" into the volume they are designed to protect?  

What do the numbers mean

1 unit of will protect 0.83 cu ft. or about 1430 sq in.

Thanks.

These guys or the website ought to be able to answer any questions you might have.

http://www.desiccare.com/index.html

Keith

Thanks for the link Keith.

Remember those bags should be recyclable.  Buy twice as much as you need and you can rotate them as they become saturated.  Just pop them in your oven at about 180 deg for 8-12 hours and they're good as  new.   You can tell its time to reactivate if the consistency of the bag feels different.  Look for humidity indicator cards also, they usually come in a can of 100 and will let you know for sure that your dessicant is working.