SLEEK ERGONOMICS: All the ergonomic benefits of a standing desk with the professional look of a high-end office desk — complete with a sleek leg cover, built-in wire management, anti-collision sensor, customizable sedentary alert, and quiet motor. INSTANT ADJUSTABILITY: Changing positions is quick and easy; just press down or lift up the control panel to adjust the ergonomic desk anywhere from 27-46.7 inches from the floor. Two customizable presets save your preferred seated and standing heights. SUPERIOR DURABILITY: The scratch-resistant thermally fused laminate surface maintains its look in a busy office. Welded steel base concealed by freestanding leg cover and bookcase for a weight capacity of 200 pounds with tack glides to protect flooring. FLEXIBLE STORAGE: Open and closed storage with adjustable shelves and lockable drawers. File drawer holds letter, legal, and A4-size documents, and bookcase installs on either side of the desk, while the cabinet extends your work surface or stands alone. TESTING AND WARRANTY: American made with U.S. and imported parts, this desk meets or exceeds ANSI/BIFMA quality standards for safety and performance and is backed by the Bush Business Furniture Limited Lifetime Warranty; desk base warranted 5 years.