Specs · Clearance
Robot Vacuum Threshold and Clearance Ratings
Body height and obstacle-crossing figures as the manufacturers state them, and how to check them against your own floors and furniture.
Two home-layout questions decide more robot-vacuum frustration than any other: can it get over the raised thresholds in my house, and can it get under my low furniture? This page collects the height and crossing figures manufacturers actually state.
Stated height and obstacle-crossing
| Robot | Body / low-clearance height | Stated crossing height | Manufacturer wording |
|---|---|---|---|
| Roborock Saros 10R | 3.14 in | 1.57 in | AdaptiLift Chassis — rated up to 4 cm, incl. thresholds and U-shaped furniture legs |
| Dreame X50 Ultra | 3.5 in | 2.36 in | ProLeap retractable legs — thresholds, door tracks and barriers up to 2.36 in; VersaLift lowers the body to 3.5 in for low furniture |
| Roborock Qrevo Edge 3 Pro | 3.13 in | 3.46 in | AdaptiLift Chassis 3.0 — 1.77 in single-layer and 3.46 in double-layer thresholds; 3.13 in low-clearance access |
| iRobot Roomba j7+ (7550) | 3.4 in | Not stated | Body dimension only: listed as 13.3 in wide x 3.4 in high (not a clearance or crossing rating) |
| eufy RoboVac 11S (Slim) | Not stated | Not stated | Marketed as super-thin to fit under low furniture (no height figure captured) |
No usable height or crossing figure was found for: Dreame L40 Ultra Gen 2, Narwal Freo Z Ultra, eufy X10 Pro Omni, Shark AI Ultra (XL HEPA base), ECOVACS DEEBOT X2 Omni, iRobot Roomba Combo j9+. That is a gap in what was published, not a claim that they cannot cross thresholds.
How to use these numbers
- Measure your own home. With a ruler, measure the tallest point of each threshold or door track the robot must cross, and the clear height under each sofa, bed, and cabinet you want cleaned.
- Compare against the stated figure, treating it as a maximum. Manufacturer ratings describe the most a robot is rated to handle under the manufacturer's own conditions, not a guarantee on every surface.
- Check how the brand defines the obstacle. Some brands distinguish single-layer thresholds from double-layer (stepped) thresholds and quote different limits for each; others give one figure. Do not assume figures with different wording are the same measurement.
- Remember height cuts both ways. A raised sensor or turret adds height, so under-furniture clearance is a separate question from crossing ability. Read the "body height" column for the first and "crossing height" for the second.
See our buying guides for these layouts: robot vacuums for high thresholds and robot vacuums for low furniture. Related troubleshooting: robot vacuum stuck under furniture.
How to cite this data
You are welcome to quote or link to figures on this page. Please attribute them as: Robot Vacuum Specs Editorial Team, "Robot Vacuum Threshold and Clearance Ratings", robotvacuumspecs.com/specs/threshold-clearance, data last reviewed September 20, 2026. The figures are manufacturer-stated specifications, not our measurements, and should be described that way. If you find an error, please tell us through the contact page so it can be corrected.