Dust Bags

Where can I buy just bags for my D 20 Air plus and be sure they will fit the vacuum?

Here is a link to the Dreame page where you can buy them directly from their site.

https://www.dreametech.com/products/dreame-d10-plus-gen-2-dust-bags-3-pack

When you are on that page, it also gives you the dimensions and tells you that it is a 4L bag, so if you do ever buy them elsewhere, I would just make sure that the dimensions and size is the same as what Dreame describes.