ADVANTUS-Cropper Hopper Easy Access Paper Holder. Protect up to 600 sheets of 12x12 inch cardstock. Easy and quick assembly; use with Cropper Hopper vertical components (not included) and easy access tabs (not included); constructed of heavy duty black plastic that is acid free and archival safe. Assembled measurements: 14-1/4x9-1/2x13-1/2in. Imported.