The Insert fits neatly into all stackable vault trays and features anti-tarnish LusterLoc™ lining. No more tarnishing for up to 35 years! Beautifully organize and display jewelry with the vault tray necklace half insert. Insert fits neatly into all stackable vault trays and features anti-tarnish LusterLoc™ lining. No more tarnishing for up to 35 years!7.12" L x 7.75" W x 1" HStorage: 5 Necklace CompartmentsLusterLoc™: Allows the fabric lining the inside of your jewelry cases to absorb the hostile gases known to cause tarnishing. Under typical storage conditions, it can prevent tarnishing for up to 35 years.Other: Vault tray inserts have the ability to stack as high as you want within the trays