We have something similar to blue print drawers except we paid $15 for them.
When we first opened, money was very tight (still is), so we were able to scoff some wooden drawers from the materiéls department of a large teaching hospital. Often when grants run out, hospitals dismantle entire labs and whole departments and place the equipment in storage never to be reused. I contacted the guy who oversees this orphaned equipment and browsed the warehouse. I was able to glom onto this wooden flat file cabinet which, I think, was used to store slides. It is ~ 48” x 20” x 33” with 10–3” slim drawers perfect for storing flat artwork. (I also nabbed an old beat up wooden desk [with a fold up drawer for typewriters], and two dented, metal file cabinets for another $15 each.)
The “slide” cabinet is pretty ugly, but I designed the front counter to surround it so the customers cannot tell how bad my taste in furniture is.
If you’re not too fussy about appearances, and you don’t have a teaching hospital near you, you might be able to find something you can adapt at a used furniture store especially if an engineering firm has recently gone belly up.