Rx Labels (and most other vet items): 30258 (Landscape).Address/Chart Labels: 30252 (Landscape).Make sure the Paper Size has the correct labels/appointment cards your office will be using.Click on the Advanced tab, then the Printing Defaults button.
Right mouse-click on the Dymo printer and click on Printer Properties.You will see your Dymo Labelwriter 450.Go to Control Panel | Devices and Printers.Click on the Dymo printer that should be configured, then click on Printer Properties.Go to Settings | Bluetooth & devices | Printers & scanners.Make sure the Dymo Labelwriter software is installed (see instructions above for help on installation).Important Note: The Dymo printer settings need to be set up first because IntraVet pulls the settings from the Dymo printer settings. Dymo 450 Labelwriter - Printer Configuration