Protect up to 600 sheets of 12 x 12 inch cardstock. Easy and quick assembly, use with Cropper Hopper vertical components CH92604 (not included) and easy access tabs CH92601 (not included), constructed of heavy duty black plastic that is acid free and archival safe. Assembled measurements: 14-1/4 x 9-1/2 x 13-1/2in. Imported.