What is the Original Prusa MK4 build volume?

The nominal build volume is 250 × 210 × 220 mm. X, Y and Z are different, so the orientation of the part matters.

Is the MK4 the same size as the MK3S+?

The X and Y dimensions are the same, but the MK4 has a 220 mm Z height versus 210 mm on the MK3S+. Use the correct profile.

Can a 240 mm model fit the MK4?

It fits along X at 240 mm with 5 mm per side to spare, but not along the 210 mm Y axis. Rotate the part and check supports before printing.

Can the Prusa MK4 print ABS?

Yes, but the open frame needs an enclosure for reliable ABS/ASA. Large flat parts can warp even when they fit the 250 × 210 × 220 mm envelope.

Is the Prusa MK4 good for PETG?

Yes. PETG is a good fit for the MK4; dry the filament, use the correct sheet and check the 210 mm Y depth on long parts. A three-perimeter wall is a practical starting point.

Printers/FDM

Prusa MK4 build volume and fit check

The MK4 has a 250 × 210 × 220 mm build volume, so the plate is not square. A part can measure 250 mm along X but only 210 mm along Y; a quarter turn is often enough to make a long model fit. The checker compares the bounding box in all six axis-aligned orientations and reports the best one.

250 × 210 × 220 mmFDMNo upload

Build volume

250 × 210 × 220mm

Process: FDM
Specs verified: 2026-11-01

Build volume & fit check

Check a model against this build volume

Nominal build volume. Usable area can be smaller with purge lines, brims, or the exact slicer profile.

Build volume & fit check

No upload

Prusa MK4

250 × 210 × 220 mm · FDM

Build volume

250 × 210 × 220 mm

Process

FDM

XY clearance per side (mm)

0 mm

Model units

Millimetres

Drop a model to check the bed

STL, OBJ, PLY, 3MF, GLB, glTF, or a .gltf with all of its .bin companions. Files are read locally.

Model units · XY clearance per side (mm)

Nominal build volume. Usable area can be smaller with purge lines, brims, or the exact slicer profile.

Drop a model to check the bed

STL, OBJ, PLY, 3MF, GLB, glTF, or a .gltf with all of its .bin companions. Files are read locally.

Choose a file

Max file size: 500 MB · No upload

Model unitsXY clearance per side (mm)

Removed from the usable bed width and depth; the Z height is not reduced.

No upload · Worker

Printer specifications

Build volume: 250 × 210 × 220 mm
Process: FDM
Height: 220 mm
Model variants: Original Prusa MK4
Source: help.prusa3d.com

Nominal build volume. Usable area can be smaller with purge lines, brims, or the exact slicer profile.

Model-specific limits

The Y depth is 210 mm, not 250 mm. Treating the plate as a 250 mm square is the most common way to get an MK4 fit result wrong.
The MK4 Z height is 220 mm, 10 mm more than the MK3S+. Do not reuse an MK3S+ profile when checking a tall part.
The open frame is not ideal for ABS or ASA without an enclosure. The dimensional result does not include warp or draughts.

What fits

Functional parts and fixtures

The 250 mm X axis suits brackets, jigs and replacement parts. Rotate long parts onto X when the Y depth is the limiting dimension.

PETG and PLA prototypes

The MK4 is a good fit for everyday PLA and PETG parts. Keep a 5 mm margin for a skirt or brim when using the full plate.

Tall assemblies

The extra 10 mm of Z over the MK3S+ matters for stacked parts. Check the exact height before reusing a proven MK3S+ profile.

Orientation tips

Try a 90-degree rotation first when a model is slightly over 210 mm in Y; it may fit along the 250 mm X axis.
When a model approaches 250 mm in X, reduce the brim or move the part away from the prime line.
For tall parts, verify the 220 mm height against the slicer profile, not a generic MK4 spec sheet.

Questions

References

https://help.prusa3d.com/article/faq-frequently-asked-questions_1932

Specs verified: 2026-11-01

Independent compatibility tool. Not affiliated with the printer manufacturer; verify the exact printer profile in your slicer before printing.