SUNLU S4 4-Spool 3D Printer Filament Dryer Box
Click for pricing and details on the retailer's site
Why We Chose This Product:
The SUNLU S4 earns the top spot by drying four 1kg spools at once using a 350W PTC heater and three internal fans that maintain uniform 70°C air circulation. Its eight PTFE exit ports allow direct feeding to multiple 3D printers or multi-material hubs, saving substantial desk space compared to running four individual drying units.
Who Is It For:
High-volume makers, print farm operators, and multi-color 3D printer users who need to dry or feed up to four 1kg spools simultaneously. It is ideal if you regularly run high-temp materials like Nylon, ABS, and TPU alongside standard PLA.
Holds four 1kg spools at once for high-volume printing and print farms
350W PTC heater with three circulation fans delivers fast 70°C surround heating
Large physical footprint occupies significant workbench space
Tech specs:
- Capacity
- 4 Spools (4kg)
- Heater
- 350W PTC
- Max Temp
- 70°C
- Exit Ports
- 8 PTFE Ports








































































