Yes, we can! You will have to set up a mask file for the area that will have spot UV and send that file along with the print-ready file. We can add Spot UV not only on posters, but also on foam core, mounted boards, gator boards, and much more. Please reach out to our Support Team for us to assist you with pricing and placing the order. Contact Support Team at Support@4over4.com or use this link to submit your custom quote project https://www.4over4.com/custom-project