Free
Photoshop mockup of free 6 x 9 (3 book) box set mockup template. This free psd file was found from Covervault. This is empty mockup so you can easily add your own design to it.
This free mockup was also featured on The Best Free Mockups. Find more more free mockups in their categories such as free packaging mockups & free box mockups & free print mockups & free book mockups.