Dlx filters whose particularity lies in the dotted lines located on the cardboard sheets. indeed thanks to these dotted lines you can cut your cardboard according to the desired width. . . mark . dlx. matter . cardboard filters. presentation . packaging of 25 notebooks that can make up to 60 filters. specificities . dlx cardboard filters: . . provided with dotted lines to cut it according to the desired length and thickness. . . dimensions. filter: total length x total width (cm) 7.2 x 4.5 cm .