Small single copy paper K-DUPL100 guest checks can be used as a standalone blank pad or to create duplicate copies of any single copy paper or board check.. Single paper, interleaving carbon unlined systems kitchen check used in conjunction with a single copy guest check book and accessory holder AL-25 to produce multiple copies from a single original.. Place the book under a single paper or board check and the carbon top sheet of the K-DUPL100 will create a duplicate. Can also be used as a cost effective white numbered pad with duplicate option for any setting