For a dual-zone heated bed
Elegoo Neptune 4 Pro
An open-frame FDM printer with a 225 × 225 × 265 mm nominal build volume, a dual-zone heated bed, and Klipper firmware pre-installed.
In short The Elegoo Neptune 4 Pro is an open-frame filament (FDM) 3D printer with a 225 × 225 × 265 mm (8.9 × 8.9 × 10.4 in) build volume. Elegoo claims a 500 mm/s top speed, a 300 °C (572 °F) nozzle and a 110 °C (230 °F) bed; the printer measures 475 × 445 × 515 mm (18.7 × 17.5 × 20.3 in) and weighs 8.9 kg (19.6 lb).
Documentary analysis · Not personally tested
FDM · Open frameWhy consider it?
A dual-zone heated bed (100W + 150W) that automatically activates the outer zone based on model size, 121-point leveling, and Klipper firmware pre-installed per Elegoo.
What to verify
The real benefit of the dual-zone bed depends on the size of the parts printed; like the base Neptune 4, this model has neither Wi-Fi nor a built-in camera.
Elegoo Neptune 4 Pro specifications
- Technology
- Filament (FDM)
- Build volume
- 225 × 225 × 265 mm (8.9 × 8.9 × 10.4 in)
- Printer dimensions
- 475 × 445 × 515 mm (18.7 × 17.5 × 20.3 in)
- Weight
- 8.9 kg (19.6 lb)
- Enclosure
- Open frame
- Claimed top speed
- 500 mm/s
- Claimed acceleration
- 20,000 mm/s²
- Max nozzle temperature
- 300 °C (572 °F)
- Max bed temperature
- 110 °C (230 °F)
- Multicolor
- No multicolor system; Elegoo confirms this model does not support multicolor printing.
- Materials
- PLA, TPU, PETG, ABS, ASA, and nylon with a nozzle advertised up to 300°C; ABS and ASA are recommended with an enclosure sold as an accessory.
- Connectivity
- Ethernet, USB
- Listed features
- Auto bed leveling, filament runout sensor
How much space does it need?
The Elegoo Neptune 4 Pro measures 475 × 445 × 515 mm (18.7 × 17.5 × 20.3 in) for a 225 × 225 × 265 mm (8.9 × 8.9 × 10.4 in) build volume: the dashed box is the printer, the solid cube the largest theoretical part, about 12% of the machine’s volume. Add room for the spool or multicolor unit, cables and ventilation.
Source: official Elegoo pages (fr.elegoo.com), checked September 28, 2026. Manufacturer claims, not our measurements. Build volume is nominal: orientation, supports and reserved zones can reduce the usable space.
Which projects is it for?
The Neptune 4 Pro carries over the open frame and 225 × 225 × 265 mm nominal build volume of the Neptune 4, with Klipper firmware pre-installed and a top speed advertised at 500 mm/s. The main difference is a heated bed split into two zones, 100W and 150W, that automatically activates the outer zone once the model exceeds 120 × 120 mm per Elegoo.
This targets users who print parts of varying sizes and want to cut heating time on small objects, while still being able to heat the full bed for larger parts.
Materials and setup
Like the Neptune 4, this version advertises a 300°C nozzle compatible with PLA, TPU, PETG, ABS, ASA, and nylon, with a dual-gear direct extruder and a copper-titanium heat break per Elegoo. Both bed zones can also be controlled manually for finer temperature control.
The chassis stays open: Elegoo still recommends a separate enclosure for ABS and ASA. The dual-sided plate, PLA-specific and textured PEI, is the same as on the standard Neptune 4.
What the bundle includes or not
The box mirrors the Neptune 4's: base unit, gantry, spool holder arm, touch screen, and spiral cable per Elegoo's "What's In Box" list, which mentions further items, 9 and up in total, without detailing all of them. The exact contents should be checked on the retailer's listing.
Per Elegoo customer support quoted on the product page, multicolor printing is not supported on the Neptune 4 Pro; there is also no Wi-Fi or camera on this model.
Alternatives to compare
For a tighter budget without the segmented bed, the Neptune 4 covers the same volume for less. For more build space, the Neptune 4 Plus and Neptune 4 Max expand the footprint while keeping Klipper.
The beginner's buying guide helps compare these Neptune 4 variants before deciding.
Similar printers to compare
Sources and limits
- Source: official Elegoo pages (fr.elegoo.com), checked September 28, 2026. Manufacturer claims, not our measurements.
- How we assess specifications
We have not measured noise, real printing speed, accuracy or reliability, so none of these is rated here.