Guide: door thresholds

Robot Vacuums & Door Thresholds: What Height Can Yours Climb?

Your robot vacuum stops at the door threshold? What matters is the height and edge of the threshold and your model. If it cannot cross reliably, a made-to-measure ramp helps.

Choose the right ramp Measure the threshold first

Threshold height

How high a threshold can a robot vacuum climb?

As a rough guide: up to about 2 cm (¾ in), many robot vacuums cross a door threshold on their own. At 3 cm (1¼ in), it depends heavily on the model. From about 4 cm (1½ in), most need a ramp; only some new models with a climbing chassis state higher figures.

For your robot, what counts is the figure for your specific model, not the brand. The manufacturer figures by model are further down. However, they often do not say which edge shape they apply to: a vertical, sharp edge is harder to cross than a rounded or bevelled one of the same height.

Often without help

Threshold up to 2 cm (¾ in)

Many robot vacuums get over this without help. If yours gets stuck, check the shape of the edge and whether the mopping unit is attached. If that does not help, plan a ramp at the full measured height.

Depends on the model

Threshold of 3 cm (1¼ in)

Here the model decides. Compare the manufacturer’s figure with your threshold and pay attention to the edge. If the robot does not cross it reliably, a 3 cm door threshold ramp is the simple solution.

Usually a ramp

Threshold of 4 cm (1½ in)

From this height, the great majority of robot vacuums need a ramp; some new models with a climbing chassis state 4 cm or more. Besides the height, measure the available width and the space in front of the threshold; the threshold ramp is made to exactly this height.

Usually a ramp

Threshold of 5 cm (2 in)

Only a few new models state a figure of their own for a single threshold of this height. Otherwise, plan a door threshold ramp 5 cm high. On a balcony door, the heights inside and outside often differ; measure both sides separately.

Threshold ramp up to 10 cm

Over 5 cm: around 8 or 10 cm (3 or 4 in)

Maximum figures such as 8 or 10 cm apply to two steps in a row, not to a single threshold. The threshold ramp is made up to a height of 10 cm. Check the space in front of the threshold, because the depth of the ramp grows with its height.

Step ramp up to 30 cm

Crossing a higher step

For single steps and larger differences in height there is the step ramp up to 30 cm (12 in). For special installation situations, we help based on measurements and photos.

What manufacturers state for their models

Choose the brand of your robot vacuum. Three things help when reading the figures:

Single threshold is the figure for a normal door threshold with one edge. Two steps is the total height of two thresholds in a row, such as a balcony door track and a door threshold; for this, manufacturers usually require a minimum distance or a minimum width of the lower step.
The figures come from the manufacturers’ own tests. At a vertical edge or with the mopping unit attached, a robot often manages less.
An asterisk (*) means the manufacturer does not say whether a single threshold or two steps are meant. A dash means no figure is given.

Roborock48 models · single threshold 1.5–4.5 cm

Model	Single threshold	Two steps	Source
Saros 20	4.5 cm	8.8 cm	Maker
Saros 20 Flow Complete	–	8.8 cm	Maker
Saros 20 Neo	–	8.8 cm	Maker
Saros 20 Sonic	–	8.8 cm	Maker
Qrevo Curv	3 cm	4 cm	Maker
Qrevo Edge	3 cm	4 cm	Maker
Qrevo Edge 2 Pro	3 cm	4 cm	Maker
Saros 10	3 cm	4 cm	Maker
Qrevo Curv 2 Pro / ProX	–	4 cm	Maker
Qrevo CurvX	–	4 cm	Maker
Saros 10R	–	4 cm	Maker
Saros Z70	–	4 cm	Maker
E4without mopping unit	2 cm	–	Maker
E5without mopping unit	2 cm	–	Maker
Q10 S5 / S5+	2 cm	–	Maker
Q10 X5 / X5+	2 cm	–	Maker
Q5 Max+	2 cm	–	Maker
Q5 Pro / Pro+	2 cm	–	Maker
Q7 L5 / L5+	2 cm	–	Maker
Q7 M5 / M5+	2 cm	–	Maker
Q7 Max / Max+	2 cm	–	Maker
Q8 Max / Max+	2 cm	–	Maker
QV 35A / QR 598	2 cm	–	Maker
QV 35S	2 cm	–	Maker
Qrevo 2 Pro	2 cm	–	Maker
Qrevo Curv 2 Flow / FlowX	2 cm	–	Maker
Qrevo Curv 5A1 / S5X	2 cm	–	Maker
Qrevo Edge 2	2 cm	–	Maker
Qrevo Edge 2 Flow	2 cm	–	Maker
Qrevo Edge S5A / 5V1	2 cm	–	Maker
Qrevo EdgeT	2 cm	–	Maker
Qrevo Master	2 cm	–	Maker
Qrevo MaxV	2 cm	–	Maker
Qrevo Plus	2 cm	–	Maker
Qrevo Pro	2 cm	–	Maker
Qrevo S	2 cm	–	Maker
Qrevo S Pro	2 cm	–	Maker
Qrevo S5V	2 cm	–	Maker
Qrevo Slim	2 cm	–	Maker
S5	2 cm	–	Maker
S5 Max	2 cm	–	Maker
S6	2 cm	–	Maker
S6 MaxV	2 cm	–	Maker
S6 Pure	2 cm	–	Maker
S8 / S8+	2 cm	–	Maker
S8 MaxV Ultra	2 cm	–	Maker
S8 Pro Ultra	2 cm	–	Maker
S4	1.5 cm	–	Maker

Dreame35 models · single threshold 1.8–5.2 cm

Model	Single threshold	Two steps	Source
X60 Pro Master	5.2 cm	10 cm	Maker
X60 Pro Ultra Complete	5.2 cm	10 cm	Maker
Aqua20 Pro Ultra Roller X Complete	5 cm	10 cm	Maker
X50s Ultra	4.5 cm	8.8 cm	Maker
Aqua10 Ultra Roller Complete	4.2 cm	8 cm	Maker
Matrix10 Ultra	4.2 cm	8 cm	Maker
Aqua10 Roller	4.2 cm	6 cm	Maker
Aqua10 Ultra Track Complete	4.2 cm	6 cm	Maker
X50 Master	4.2 cm	6 cm	Maker
X50 Ultra Complete	4.2 cm	6 cm	Maker
L40s Pro Ultra	2.2 cm	4 cm	Maker
L50 Pro Ultra	2.2 cm	4 cm	Maker
L50s Pro Ultra	2.2 cm	4 cm	Maker
L60 Ultra	2.2 cm	4 cm	Maker
Matrix10 Pro	2.2 cm	4 cm	Maker
L40 Ultra	2.2 cm	–	Maker
X40 Master	2.2 cm	–	Maker
X40 Ultra Complete	2.2 cm	–	Maker
D10 Plus Gen 2	2 cm	–	Maker
D20	2 cm	–	Maker
D20 Air Plus	2 cm	–	Maker
D20 Pro Plus	2 cm	–	Maker
D30 Ultra	2 cm	–	Maker
D9	2 cm	–	Maker
D9 Max	2 cm	–	Maker
F9without mopping unit	2 cm	–	Maker
L10 Pro	2 cm	–	Maker
L10s Ultra	2 cm	–	Maker
L10s Ultra Gen 2	2 cm	–	Maker
L20 Ultra	2 cm	–	Maker
L40 Ultra A	2 cm	–	Maker
L50 Ultra AE	2 cm	–	Maker
X30 Ultra	2 cm	–	Maker
Z10 Prowithout mopping unit	2 cm	–	Maker
W10	1.8 cm	–	Maker

ECOVACS51 models · single threshold 1.4–2.5 cm

Model	Single threshold	Two steps	Source
X12S OmniCyclone	2.5 cm	5 cm	Maker
T90S Pro Omni	2.5 cm	4.9 cm	Maker
T90 Pro Omni	2.4 cm	4 cm	Maker
X11 OmniCyclone	2.4 cm	4 cm	Maker
X12 OmniCyclone	2.4 cm	4 cm	Maker
X12 Pro Omni	2.4 cm	4 cm	Maker
X2 Combo	2.2 cm	–	Maker
X2 Omni	2.2 cm	–	Maker
X5 Omni	2.2 cm	–	Maker
X5 Pro Omni	2.2 cm	–	Maker
N10	2 cm	–	Maker
N8	2 cm	–	Maker
N8 Prowithout mopping plate; with it about 0.8–1.5 cm	2 cm	–	Maker
N8 Pro+without mopping plate; with it about 0.8–1.5 cm	2 cm	–	Maker
N8+	2 cm	–	Maker
OZMO 920	2 cm	–	Maker
OZMO 950	2 cm	–	Maker
OZMO T8without mopping plate; with it about 0.8–1.5 cm	2 cm	–	Maker
OZMO T8 AIVIwithout mopping unit	2 cm	–	Maker
OZMO T8+without mopping plate; with it about 0.8–1.5 cm	2 cm	–	Maker
T10	2 cm	–	Maker
T10+	2 cm	–	Maker
T20 Omni	2 cm	–	Maker
T30 Omni	2 cm	–	Maker
T30 Pro Omni	2 cm	–	Maker
T30S / T30S Combo	2 cm	–	Maker
T50 Omni	2 cm	–	Maker
T50 Pro Omni	2 cm	–	Maker
T80 Omni	2 cm	–	Maker
T80S Omni	2 cm	–	Maker
T9without mopping plate; with it about 0.8–1.5 cm	2 cm	–	Maker
T9+without mopping plate; with it about 0.8–1.5 cm	2 cm	–	Maker
T90 Max Omni	2 cm	–	Maker
T90 Max Pro Omni	2 cm	–	Maker
X1 Omni	2 cm	–	Maker
X1 Plus	2 cm	–	Maker
X1 Turbo	2 cm	–	Maker
X8 Omni	2 cm	–	Maker
X8 Pro Omni	2 cm	–	Maker
X9 Pro Omni	2 cm	–	Maker
710	1.8 cm	–	Maker
900	1.8 cm	–	Maker
OZMO 900	1.8 cm	–	Maker
U2without mopping unit	1.8 cm	–	Maker
U2 Prowithout mopping unit	1.8 cm	–	Maker
mini 2	1.8 cm	–	Maker
OZMO 930without mopping unit	1.6 cm	–	Maker
OZMO 960	1.6 cm	–	Maker
500	1.4 cm	–	Maker
600	1.4 cm	–	Maker
605	1.4 cm	–	Maker

iRobot5 models · single threshold 1.2–3.5 cm

Model	Single threshold	Two steps	Source
Roomba Max 875 Combo	3.5 cm	–	Maker
Roomba Plus 575 Combo	3.5 cm	–	Maker
Roomba, other modelsiRobot’s general figure for all Roomba models	1.6 cm	–	Maker
Roomba Combo i5 / i5+with combo bin; 1.6 cm with dust bin	1.2 cm	–	Maker
Roomba Combo j5 / j5+with combo bin; 1.6 cm with dust bin	1.2 cm	–	Maker

Xiaomi16 models · single threshold 1.7–6 cm

Model	Single threshold	Two steps	Source
Robot Vacuum 6 Max	6 cm	–	Maker
Mi Robot Vacuum-Mop	2 cm	–	Maker
Mi Robot Vacuum-Mop 2	2 cm	–	Maker
Mi Robot Vacuum-Mop 2 Lite	2 cm	–	Maker
Mi Robot Vacuum-Mop 2 Ultra	2 cm	–	Maker
Mi Robot Vacuum-Mop P	2 cm	–	Maker
Robot Vacuum 5 Pro	2 cm	–	Maker
Robot Vacuum H40	2 cm	–	Maker
Robot Vacuum H50	2 cm	–	Maker
Robot Vacuum S40	2 cm	–	Maker
Robot Vacuum S40 Pro	2 cm	–	Maker
Robot Vacuum S40C	2 cm	–	Maker
Robot Vacuum X10	2 cm	–	Maker
Robot Vacuum X20 Max	2 cm	–	Maker
Robot Vacuum X20+	2 cm	–	Maker
Mi Robot Vacuum-Mop Essential	1.7 cm	–	Maker

eufy20 models · single threshold 1.5–3.5 cm

Model	Single threshold	Two steps	Source
Omni S2 / HydroJet S2	3.5 cm	4.2 cm	Maker
Omni E35	3 cm*	–	Maker
Omni E25	2.1 cm	–	Maker
Omni E28	2.1 cm	–	Maker
X10 Pro Omni	2.1 cm	–	Maker
3-in-1 E20	2 cm	–	Maker
Omni C28	2 cm	–	Maker
Omni S1 Pro	2 cm	–	Maker
RoboVac L35 Hybrid	2 cm	–	Maker
RoboVac L70 Hybrid	2 cm	–	Maker
RoboVac LR30 Hybrid	2 cm	–	Maker
G50 Hybrid	1.8 cm	–	Maker
Omni C20	1.8 cm	–	Maker
RoboVac X8	1.7 cm	–	Maker
RoboVac X8 Hybrid	1.7 cm	–	Maker
RoboVac 11S	1.6 cm	–	Maker
RoboVac 15C	1.6 cm	–	Maker
RoboVac G10 Hybrid	1.6 cm	–	Maker
RoboVac G30	1.5 cm	–	Maker
RoboVac G30 Hybrid	1.5 cm	–	Maker

MOVA15 models · single threshold 1.8–5 cm

Model	Single threshold	Two steps	Source
V70 Ultra Complete	5 cm	9 cm	Maker
MOBIUS 60	5 cm	8 cm	Maker
Z70 Ultra Roller Complete	4.8 cm	9 cm	Maker
Z60 Ultra Roller Complete	4.8 cm	8 cm	Maker
P50s Ultra	4.2 cm	6 cm	Maker
V50 Ultra Complete	4.2 cm	6 cm	Maker
S70 Ultra Roller	3 cm	4 cm	Maker
E40 Ultra	2.2 cm	–	Maker
P50 Pro Ultra	2.2 cm	–	Maker
P50 Ultra	2.2 cm	–	Maker
P70 Pro Ultra	2.2 cm	–	Maker
E30 Ultra	2 cm	–	Maker
S10 / S10 Plus	2 cm	–	Maker
S20 Ultra	2 cm	–	Maker
E20 Plus	1.8 cm	–	Maker

Narwal9 models · single threshold 2–3 cm

Model	Single threshold	Two steps	Source
Flow 2	4 cm*	–	Maker
Freo Z10 Ultra	4 cm*	–	Maker
Flow	3 cm	4 cm	Maker
Freo 20	3 cm	4 cm	Maker
Freo S	2 cm	–	Maker
Freo X Plus	2 cm	–	Maker
Freo X Ultra	2 cm	–	Maker
Freo X10 Pro	2 cm	–	Maker
Freo Z Ultra	2 cm	–	Maker

Samsung8 models · single threshold 1.5–6 cm

Model	Single threshold	Two steps	Source
Bespoke AI Jet Bot Steam (Ultra)only with a climbing zone set up in the app	6 cm	–	Maker
POWERbot VR9300	2 cm	–	Maker
Bespoke Jet Bot Combo (AI)	1.5 cm	–	Maker
Jet Bot (VR8000)	1.5 cm	–	Maker
Jet Bot AI+ (VR9500)	1.5 cm	–	Maker
Jet Bot+ (VR8500)	1.5 cm	–	Maker
POWERbot VR7000	1.5 cm	–	Maker
POWERbot VR9000	1.5 cm	–	Maker

Dyson2 models · single threshold 2–4 cm

Model	Single threshold	Two steps	Source
R1 Nurovi / R2 Nurovi	4 cm	–	Maker
360 Vis Nav	2 cm	–	Maker

SwitchBot7 models · single threshold 1.7–2 cm

Model	Single threshold	Two steps	Source
K20+ Pro	2 cm	–	Maker
S10	2 cm	–	Maker
S20	2 cm	–	Maker
K10+ Pro	1.7 cm	–	Maker
K10+ Pro Combo	1.7 cm	–	Maker
K11+	1.7 cm	–	Maker
K11+ Pro	1.7 cm	–	Maker

Vorwerk4 models · single threshold 2 cm

Model	Single threshold	Two steps	Source
Kobold VR100	2 cm	–	Maker
Kobold VR200	2 cm	–	Maker
Kobold VR300	2 cm	–	Maker
Kobold VR7	2 cm	–	Maker

Miele2 models · single threshold 1.7–2 cm

Model	Single threshold	Two steps	Source
Scout RX1	2 cm	–	Maker
Scout RX3	1.7 cm	–	Maker

Kärcher4 models · single threshold 1–2.5 cm

Model	Single threshold	Two steps	Source
RVC 3 Comfort	2.5 cm	–	Maker
RCV 5	2 cm	–	Maker
RCV 3	1.8 cm	–	Maker
RC 4.000	1 cm	–	Maker

Philips7 models · single threshold 1.3–2 cm

Model	Single threshold	Two steps	Source
HomeRun 7000 Series Aqua	2 cm	–	Maker
SmartPro Compact FC8774	1.8 cm	–	Maker
HomeRun 2000 Series	1.7 cm	–	Maker
HomeRun 3000 Series Aqua	1.7 cm	–	Maker
SmartPro Compact FC8776	1.7 cm	–	Maker
SmartPro Active	1.5 cm	–	Maker
SmartPro Compact FC8700 / FC8710 / FC8715	1.3 cm	–	Maker

Rowenta3 models · single threshold 1.8 cm

Model	Single threshold	Two steps	Source
X-plorer Serie 65 / 65+	1.8 cm	–	Maker
X-plorer Serie 75 S	1.8 cm	–	Maker
X-plorer Serie 75 S+	1.8 cm	–	Maker

Medion2 models · single threshold 1.8–2 cm

Model	Single threshold	Two steps	Source
X50 SW	2 cm	–	Maker
X20 SW+	1.8 cm	–	Maker

AEG2 models · single threshold 2–2.2 cm

Model	Single threshold	Two steps	Source
RX9 / RX9.1	2.2 cm	–	Maker
Trilobite (2026)	2 cm	–	Maker

Tapo (TP-Link)3 models · single threshold 2.2 cm

Model	Single threshold	Two steps	Source
RV20 Max Plus	2.2 cm	–	Maker
RV30 Max Plus	2.2 cm	–	Maker
RV50 Pro Omni	2.2 cm	–	Maker

Neato1 model · single threshold 1.9 cm

Model	Single threshold	Two steps	Source
Botvac, all modelsNeato’s general figure for all Botvac models	1.9 cm	–	Maker

Proscenic3 models · single threshold 1.5–2 cm

Model	Single threshold	Two steps	Source
M7 Pro	2 cm	–	Maker
M8 Pro	2 cm	–	Maker
850T	1.5 cm	–	Maker

Shark1 model · single threshold 2 cm

Model	Single threshold	Two steps	Source
IQ (RV1000)	2 cm	–	Maker

Ultenic1 model · single threshold 2 cm

Model	Single threshold	Two steps	Source
D5s Pro	2 cm	–	Maker

yeedi4 models · single threshold 0.9–1.6 cm

Model	Single threshold	Two steps	Source
mop station	1.6 cm	–	Maker
vac hybrid	0.9 cm	–	Maker
vac max	0.9 cm	–	Maker
vac station	0.9 cm	–	Maker

Manufacturer figures, retrieved on 2 October 2026.

Your model is missing or you are unsure? With our personal advice we help you based on photos, measurements and the exact model name.

Narrow down the cause

The robot vacuum cannot cross the door threshold: what to check?

Look at these four points before you plan a ramp.

Height and edge shape Measure from the floor to the top edge. A vertical edge is harder to cross than a rounded or bevelled one.
Mopping unit With the mopping unit attached, a robot vacuum copes less well with obstacles than without it.
Approach and space Look at how the robot approaches the threshold and how much space there is for a ramp.
Both sides Usually a threshold has a difference in height on one side only. If that is not the case, every side the robot cannot cross on its own needs its own ramp. After all, it has to get there and back.

The right solution

Which ramp suits your robot vacuum?

For a door threshold or a low floor step, the door threshold ramp is the right place to start. For larger differences in height, the step ramp is the option. Both are made of wood to your measurements.

Door threshold ramp up to 10 cm (4 in)

For door thresholds, door tracks and low floor steps. Configure height, width and type of wood to match your transition. 15° is standard; for ECOVACS and Roborock S7 we recommend 10°.

Configure the threshold ramp

Step ramp up to 30 cm (12 in)

For single higher steps, platforms and larger differences in height between rooms. The multi-part ramp is made to match your measurements. Here too: 15° standard, 10° for ECOVACS and Roborock S7.

Configure the step ramp

Not sure about the type of ramp or the installation situation? Send us measurements and photos for advice.

Dimensions and incline

Choosing height, width and incline correctly

Measuring height and width

Measure the height from the floor to the top edge of the threshold on the side where the ramp is to lie. If the floors are at different levels, the values on the two sides differ. Each ramp is planned at the full measured height.

Also measure the available width in the doorway. For both types of ramp we recommend at least 45 cm (18 in), wider if there is more space. The width runs along the threshold; the space in front of the threshold is a separate measurement.

The measuring instructions with pictures show you the individual measuring points.

A wooden threshold being measured with a tape measure — Measure the height and available width carefully; take both sides of the transition into account.

Standard

15° for almost all robot vacuums

In our practical experience, this incline works excellently with almost all robot vacuums on the market, for example the Roborock S and Q series (except S7), the Dreame L series, the iRobot Roomba i and j series, and Xiaomi, eufy, MOVA and Medion.

Exception

10° for ECOVACS and Roborock S7

For these robots we recommend the flatter version. Select it in the configurator. An even flatter version is not intended for normal robot vacuum use. All figures are angles in degrees (°), not percentages.

Frequently asked questions

Frequently asked questions about robot vacuums and door thresholds

Can my robot vacuum cross a door threshold of 3 or 4 cm (1¼ or 1½ in)?

That depends on the model and the shape of the edge. According to the manufacturers, most robot vacuums manage 1.5 to 2.5 cm (⅝ to 1 in) at a single threshold, some newer ones 3 to 3.5 cm (1¼ to 1⅜ in), and models with a climbing chassis 4 cm (1½ in) or more. Look up your model in the manufacturer figures. If your robot does not cross reliably, you can configure a door threshold ramp at the measured height.

The manufacturer says my robot vacuum can climb 8 cm. Why does it still get stuck at the threshold?

Such figures apply to two steps in a row, such as a balcony door track and a door threshold, usually only with a minimum distance between the steps. For a single threshold, the same manufacturers state much less, mostly 4 to just over 5 cm (1½ to 2 in). On top of that come the shape of the edge and the mopping unit. A ramp at the full measured height solves this reliably.

What is the solution for 5, 8 or 10 cm (2, 3 or 4 in)?

A door threshold ramp up to 10 cm high, configured to measure. For higher transitions there is the step ramp up to 30 cm (12 in).

How wide should a robot vacuum ramp be?

We recommend at least 45 cm (18 in) for door threshold ramps and step ramps. If there is more space, feel free to choose a wider ramp.

Is 15° suitable for my robot vacuum?

15° is our standard and, in our practical experience, works excellently with almost all robot vacuums. For ECOVACS and Roborock S7 we recommend 10°.

Does my robot also need a ramp for the way back?

Usually a threshold has a difference in height on one side only; then one ramp is enough. If it is higher than the floor on both sides, every side the robot cannot cross on its own needs its own ramp. After all, it has to get there and back.

Does a ramp also fit at a door frame or rebate?

Show us the installation situation with photos and measurements before you order. Through our advice service we clarify the right version for your transition.

More answers on wood, ordering and installation can be found in the frequently asked questions about our ramps.

Made to measure

The right ramp for your threshold

Measure height and width, choose 15° or, for ECOVACS and Roborock S7, 10°, and configure the ramp. We make it from wood to your measurements.

Configure the threshold ramp Configure the step ramp