Specification Brand : Electron Microscopy Sciences BulletPoint : UniMailer ItemName : UniMailer™ White, 50/PK ItemPackageQuantity : 50 ItemShape : Rectangular ItemTypeKeyword : microscope-slide-holders Manufacturer : Electron Microscopy Sciences Material : Cardboard ModelNumber : 71530 NumberOfItems : 1 OpeningMechanism : Slide PartNumber : 71537-W Pattern : Solid ProductDescription : For shipping as many slides as needed with one mailer. One-slide trays fit snugly on top of each other and are secured by a locking mechanism. Slides can be easily inserted or removed. Made from high impact polystyrene. ProductSiteLaunchDate : 2014-05-02T18:15:35.488Z Size : 6 PK UnitCount : 1