ArtBin Marker Storage Tray-White, 6939AB Exterior Box Dimensions: 8.2 x 1.5 x 9.5 inches Each Marker Tray holds 62 - 64 markers or pens, up to 6 inches in length. Easily customize your Semi-Satchel or Double Deep for a mix of marker and craft item storage. Fits a variety of art and design pens and markers such as Copic, Prismacolor, Spectrurm Noir and more (markers NOT included). 2 trays fit in the Semi Satchel (6925AB) and 4 trays fit in the Double Deep (6990AB).