I'm looking for clear plastic bags with a sliding zipper lock like the
Hefty Freezer bags. Problem with Hefty is the whire area for writing
contents. I don't want that - just clear. Should be heavy weight. A
choice of sizes would be great.

Generally speaking, you can buy any type of plastic bags from a
plastic bag factory such as ours.  Do a local search and see if there
are any local bag factories.  You would be surprised that many of them
do custom orders. :)

http://www.plastic-bag.biz