Introducing our one/two tier-switch standing desk ff1. Flexispot's new unique dual-zone height adjustable standing desk allows users to switch between one- and two-tier desktop modes, enabling greater versatility. In single-tier mode, the desk has increased unbroken desk space for easier use for tasks that require a larger area, such as arts, crafts, writing, etc. In two-tier mode, the rear of the desk can be raised up, offering more ergonomic monitor placement for more comfortable computer or office work. This second raised tier is also a great place for photos, plants, books, and other desktop accessories. Warranty is 5 year for the frame, motor and other mechanisms, and 2 year for the controller and switch, electronics. features: the unique dual-zone two-tier design suitable for users of all heights sturdy & durable construction height programmable control panel pressure-sensitive height adjustment specifications: desktop size55in x 28in height adjustment range: 28.7in - 48.4in weight capacity: 132 lbs frame color: silver whisper quietoperating noise less than 50db