Is it possible to insert grid lines on packing slips?

I know how beneficial for your business to customize your packing slip in QuickBooks Online (QBO), @King1231.

At this time, the option to insert grid lines on packing slips is unavailable in QBO. With this, I suggest submitting feedback to our product developers. This way, they can further improve your experience and consider implementing it in future updates.

To do this, here's how:

1. Log in to your QBO account, then go to the Gear icon.
2. Under the Profile section, select the Feedback.
3. Enter the details of your product comments, suggestions, and requests.
4. Click Next to submit.

Also, you can visit our Customer Feedback for QuickBooks Online to track the suggestions you submit.

Furthermore, if you need to modify your sales forms in QBO, you can check out this article: Customize invoices, estimates, and sales receipts in QuickBooks Online.

You can get back to this thread by clicking the Reply button if you have further questions about customizing your packing slips or any QuickBooks-related concerns. I'm always here to help. Have a good one.