Hello Evan. I got a bunch of canvases already made the size I like and yes they have all the sizes you need. They are very reasonable prices. Of course depending on 1/2 inch or 1 inch frame depth and quality of canvas fabric.you will be happy .the store on 6 ave is the better stocked on frames but 23rd street is also great.
No, but they have 24" x 36"
Thanks! Your answer is awaiting moderation.