Are you looking for a height adjustable desk frame to pair with your single tabletop? Our sit stand desk frame will be your ideal choice! With a manual hand crank system, this desk frame lets you switch from sitting mode to standing mode to work comfortably throughout the day. You can adjust the height of the desk frame from 27.6'' to 45.3'' to promote better posture and increase productivity. For outstanding load bearing and stability, the framework uses a reinforced steel structure to ensure long service time. What's more, 48'' board or 55'' board can be installed on the frame for versatile use and extra convenience. Enhance your work experience with this ergonomic standing workstation base! Assembly Video：https://www.youtube.com/watch?v=aL7hw0kKVzcFeaturesColor: Black Material: Steel Overall Dimension: 41'' X 23'' X 27.6'' - 45.3'' (L X W X H) Net Weight: 36 lbs Weight Capacity: 110 lbs Package includes: 1 x Standing Desk Frame 1 x Instruction