Where can I find 9 or 10" SQUARE picture frames?
Answers:
Pre-assembled square picture frames are very hard to find. You might look at the "build you own" frame pieces that are available at most craft stores. They come in one inch increments. You can buy four 9" or 10" pieces and assemble them into a square frame.
The down side is not everyone likes the finishes them come in, but they are worth a look.
Other answers:
Bargain staroed or wal-mart
Bargain staroed or wal-mart
WAL -MART
Try Michaels Arts and Crafts. They have an awesome selection of frames
Bed, Bath, and Beyond
Make one yourself! You can get moulding from the home improvement store, miter cut the corners and have them cut the glass to fit. You will need a diamond shooter or even some household glue rated for glass adhesion to secure the glass. You can also make the frames in the same manner by using canvass stretchers from craft or art stores. Stain, paint or embellish them to match your subject matter.
You'll either have to have them Custom-Made...or buy the appropriately sized pieces that You Assemble Yourself.
These are Not standard sizes.