SUNLU FilaDryer S4 Pro

• Drying, annealing, storage
• Holds up to four 1 kg spools
• Two independently controllable chambers
• 380 W for temperatures up to 85°C
• Humidity control
• Touch display
• For 1.75 mm and 2.85 mm filaments

Large Capacity

With internal dimensions of 450 x 210 x 211 mm, the SUNLU FilaDryer S4 Pro can dry four 1 kg filament spools simultaneously.

Dual Chambers, Independent Temperatures

Thanks to two independently controllable chambers, different materials can be dried simultaneously under specific conditions within the S4 Pro. This allows, for example, PLA or PETG to be dried on one side while PA, PC, or Nylon is dried on the other.

Dual Control on a Single Screen

Both chambers of the filament dryer can be easily operated via a central display.

Professional Annealing

For post-processing, such as with functional parts, the S4 Pro offers an 85°C environment, providing significantly more drying capability than typical 70°C filament dryers. Especially with engineering-grade filaments like PA, PC, and Nylon, higher drying temperatures can help reduce issues such as bubbling, stringing, material brittleness, and inconsistent extrusion.

Adjustable Humidity

Adjust the humidity level inside the FilaDryer housing. When the humidity inside the box reaches the set value (30%–50%), the unit automatically activates until the humidity drops to 25%, then stops; this ensures the specific moisture requirements of various filament types are better met.

High Safety Standards

A three-layer safety design with PTC thermostat, a metal roller fan, and intelligent control software ensures reliable and safe operation of the S4 Pro.