Several 12 builders have asked where I got the plastic enveloped portfolio that I used for my wing kit instructions. It kept them together of course...and clean! All for less than $9. The one below is the one I used but Itoya has several different kinds that will all accomodate 11 x 17 sheets.
http://www.dickblick.com/zz152/30/
Pete
#17 Texas
waitin on the fuse
http://www.dickblick.com/zz152/30/
Pete
#17 Texas
waitin on the fuse