Hi Ektar,
In your area, the better options and possibilities of which I am aware are in the Alexandria, VA area, and are listed in post #2 here . However, there aren’t many factory-direct retailers there, which are usually your best bet for custom sizes. You’ll have to place a few phone calls to see if anyone would be able to help you out, as I know it is a bit of a drive from your home.
The sites would not list “your” size as being a “custom size”. Custom sizes by definition are not “normal” sizes, but unique (custom), so you would either fill out their forms for a quote on your special size, or best yet (as I always recommend) place a phone call directly to any business you are considering and explain exactly what you’re trying to accomplish, as that way you’ll be able to get the fastest and most complete response.
Unfortunately, I’m not sure what you might be able to get in just a few days (you said you had a 10 day window on your last post).
Good luck!
Phoenix