ADATA XPG 8GB RAM Kit 2x8GB DDR3TESTED.
These sticks are practically "like new" because they have only really been used during testing to verify they work. Therefore I strongly believe these RAM sticks are considered "open box".
It's hard to get specs for these specific RAM sticks that I didn't have to do additional research for, but I promise you they are extremely high quality RAM sticks I planned to use for my computer build and ultimately never did. Because of financial circumstances far beyond my control, I am selling them on here.
These are good quality RAM units that work fine on both Windows and Linux computers, as I don't have a Windows computer to show you details of right now. But the first time I got them I did run a brief test on my then Windows main production computer and they seemed to perform well (but I didn't use them because my main prod computer is quite old now.)