Whether you process items in an Ecommerce setting or transfer items from one box to another or want a box for your cat to play in these retainers will keep the box flaps out of your way! Print for one corner or all four, as many as you need!

Included in the 3mf file I have three different print orientations. In theory the piece printed on the small corner will be strongest but require superior bed adhesion. I've printed this in the orientation on one edge as well as flat on it's top and both were plenty strong. But the small amount of contact at the corner would be perfect for mass printing these for sale.