1 box protector made specifically for the Walking Dead jumbo steelbooks but these should fit many others.  

The jumbo steelbooks vary in thickness so these may not perfectly fit some others that you have.  Please check your size with the protector size listed to see if this size will work for your item.  6 7/8 x 5 1/2 x 1 1/4 or 17.5 x 14 x 3.2cm.  

Removable Peel Film

12mil Acid-Free PET Plastic