89821 Features: -AV cart designed to house all your equipment including rack mounted components.-Lift lid and hinged front door lock when closed to secure equipment.-Side magnet secures door to open position when unit is in use.-Cut out in back lower panel and swing door allows for ventilation and cable routing.-3'' casters (2 locking) for mobility.-Black laminate with black frame. Dimensions: -18'' W x 18'' D pneumatic shelf adjusts from 34'' to 44'' in height for holding documents, camera, etc..-22'' W x 8'' D lift lid with cut-out for routing cables and electrical.-22'' W x 12'' D stationary top shelf for LCD projector.-20'' W x 12.5'' D pull out keyboard shelf for laptop.-20.5'' W x 17.75'' D x 3.25'' H top stationary shelf houses electrical surge protector and cords.-Two additional 20'' W x 17.66'' D x 4.5'' H shelves are stationary for equipment storage when unit is locked.-Dimensions: 34''-44'' H x 48.25'' W x 24'' D.-Weight: 146 lbs..