We have two boxes of OL1887 arched wine labels 1,000 labels per box. Is it possible to exchange these for other sized labels?

Rather than issue exchanges, we offer a money back guarantee on all of our products. You can initiate a return at the link below. Once the items are returned, you will be refunded for the original purchase. A new order for the correct size can be placed at any time. If you need assistance with the return or new order, you can contact Customer Support at 888-575-2235. https://www.onlinelabels.com/return.htm

Will these labels work in a Epson gpc381 printer?

The Epson GP-C831 requires pin-fed labels, which unfortunately means the OL1887LP would be incompatible with your printer. We do not offer pin-fed labels and apologize for the inconvenience. If you would like to request some sample sheets for testing purposes, you are welcome to use our sample request form: https://www.onlinelabels.com/samples