Fit and measurements
Measure standing desk height and desktop fit together
A standing desk specification usually begins with the frame, but your hands rest on the installed work surface. The surface height depends on the frame setting, tabletop thickness, floor, feet or casters, and whatever you put between the keyboard and surface. To avoid choosing a frame whose published range looks right but misses your position, compare measurements in the same terms.
Measure the position you want, not a population chart
At your usual chair, adjust the seat and let your shoulders relax. Measure from the floor to the place where your hands rest on the keyboard. Repeat standing, with your wrists neutral and shoulders relaxed. These measurements are starting points for setting the desk; they are not medical advice or an ergonomic guarantee. A keyboard tray, mat, shoes, foot support or unusual chair changes the relationship.
Add the desktop to the bare-frame range
The E7's published bare frame runs from 22.8 to 48.4 inches. E7 Pro runs 25 to 50.6 inches, and E7 Plus 26 to 51.6 inches. If you want a 24-inch finished surface and choose a one-inch desktop, the frame must be able to reach below 24 inches by about the tabletop thickness. The actual installation may vary by feet or other selected accessories, so recheck the manual and final assembly. At the high end, apply the same arithmetic: a 50-inch frame maximum plus a 1-inch top gives a surface around 51 inches before any setup variation.
Check both top dimensions
Width and depth are separate compatibility conditions. FlexiSpot's E7/E7 Pro comparison lists the E7 for 47.2–80 inches wide and 24–40 inches deep, and E7 Pro for 47.2–80 inches wide by 24–30 inches deep. E7 Plus specs list 47.2–78.7 inches wide and 27.6–35.4 inches deep, with a top thicker than 0.7 inches. A top can fit the width and fail the depth, or fit the frame but interfere with a wall, drawer or cable trough. Check the selected product page, not only a family chart.
Do not forget attachments and the room
Measure a monitor arm clamp, grommet, keyboard tray and under-desk drawer against the underside diagram. Mark where the crossbar, columns, control box and handset sit. A large surface can leave more room for equipment on top but less space underneath. Leave wall clearance for cables and make sure the desk can reach the chosen positions without hitting a shelf, window sill or stored item.
For a multi-user desk, write down each person's intended sitting and standing height. Memory presets recall saved positions, but they do not verify that the positions are suitable. Once assembled, set the real tabletop and keyboard, test those positions, and recheck monitor height and cable slack at both ends of travel.