Custom framing is definitely the way to go for unusual sizes. I used a service that specializes in art frames uk for my collection of odd-sized vintage movie posters. The difference in quality compared to off-the-shelf frames is remarkable. They helped select frame styles that complemented each piece rather than competing with it. Also advised on proper mounting and glass options - apparently regular glass can damage artwork over time due to UV exposure. It's more expensive than ready-made frames for sure, but when you've invested in art you love, it's worth protecting and displaying it properly. My posters look so much more professional now, and I know they're properly preserved