4 x 3 1/3 Opaque White Blockout Laser Labels 600/Case

These opaque white labels are perfect for blocking out old shipping labels, enabling you to reuse boxes and mailers. They're laser - printable and won't smudge, ensuring a clean and professional look.

Using these labels is easy. Just load them into your laser printer like you would regular paper. Print your new shipping information on them. When you're done printing, simply peel and stick the label over the old shipping label on your box or mailer. As for maintenance, keep them in a cool, dry place away from direct sunlight. Make sure your printer is clean before using these labels to avoid any printing issues. Remember, these labels are for laser printers only, so don't try to use them in an inkjet printer.