There is the choice of attaching this tray magnetically or with self adhesive tape. Both included.
Dimensions:, Overall: 99W x 23D x 69H, Board: 96W x 40H, Tray: 94.5W x 3D, Assembly Instructions (PDF)
96W x 40H Double-Sided Magnetic Whiteboard
Changeable Glassboards - Magiboards USA
Graphic Boards - Magiboards USA
Magnetic Whiteboard Tape - Magiboards USA
Self Adhesive Gridding Tape in Dispenser - Magiboards USA
The clipboard with magnetic attachment holds up to 40 Letter sheets with a strong magnet fixed, so it can be used on any magnetic surface.
Clipboard with Magnetic Attachment - Magiboards USA
Magnetic Folding Wings - Magiboards USA
Whiteboard Dry Erase Marker Pens (Pack of 4) - Magiboards USA
The mobile meeting station whiteboard solutions are manufactured using 3 double sided magnetic whiteboards with a 1 aluminum frame, for a modern and
Magnetic Whiteboard Meeting Station
Whiteboard Marker Pen Holder, Space for 4 Pens