Hi Guys,
Sorry for the delay in responding, but I've been offline for a while.
I'm enclosing a few more pics to illustrate how I dust-proofed my cabinets, and also to show how many kits you can display in them.
Basically, I ran self adhesive weather-stripping around all 4 surfaces behind the glass door:
This shot is looking up at the inside of the cabinet:
As I said before, it doesn't totally eliminate the dust, but it cuts down on it tremendously!
These next two shots show how many kits the shelves will hold. The actual dimensions of the shelf are 11" x 15", with a bit more room on all sides. These planes are al 1/48 scale:
And these tanks are all 1/35 scale:
I hope this answers some of your questions, and I'm glad I could pass this tip along. I am sold on Ikea for inexpensive (relatively) glass display cases. Thanks for the interest!
Nathan