1. Initially, you have to identify the Discount Filters discount code you're keen on from this page and click on Get Code, located on the right side of the title.
2. Following this, the offer code will be shown and automatically replicated to your clipboard.
3. You'll then need to return to the Discount Filters's shopping checkout page, where you'll find the promotional code box and paste the coupon code you just copied into it.
4. Ultimately, by clicking 'Apply Code', you will be able to see the discount amount on your existing order.