Quartet Matrix 15-employee In/Out Board - 16 Board Height x 23 Board Width - White Natural Cork Surface - Magnetic Durable - Silver Frame - 1 Each Matrix In/Out Board tracks up to 15 employees on the magnetic painted steel surface. Thin-profile whiteboard with magnetic surface doubles as bulletin board. Board includes marker black magnetic in/out circles Quartet dry-erase marker and attachable marker tray for convenient accessory storage. With the innovative mounting system you can easily hang the in/out board on cubicle walls with Cubicle Partition Hangers (MCH10 sold separately). Mounting system secures vertical or horizontal hanging and makes side-by-side mounting alignment flawless