How to add empty column to product table in WooCommerce invoices/labels
PDF invoice, packing slip, delivery notes and shipping label for WooCommerce plugin provides pre-defined templates for invoices and other labels. However, you may want to alter the appearance of the default template to suit your varied needs.
For instance, you may want to have an empty column to the product table in invoices or other labels. You can simply insert the below-given code snippet into the active theme’s functions.php file.