The OEM Fellowes Professional Series Sit / Stand Keyboard Tray is designed for ergonomic comfort and convenience. It allows for simple, one-handed height adjustments without the need for locks or levers, accommodating taller users with a height adjustment of up to 6-1/4 inches above the desktop. The tray features a 10-inch round mousing platform that can be positioned over the keypad or flush with the keyboard for easier mousing. Additionally, it includes a leatherette keyboard palm support with Microban antimicrobial protection, ensuring a clean and comfortable workspace. The dimensions are 29.0"W x 21.0"D x 14.0"H.