FilaDryer S4
SUNLU S4 Filament Dryer is the world’s first large-capacity filament dryer, holding up to 4 spools at once, built for makers who need a serious filament dryer for 3D printing across multiple colors, materials, or machines, not just a single roll at a time.
Net Weight/Gross Weight(kg):
Rated Power(W):
Product / Carton Dimensions(L*W*H mm):



Large Capacity
Internal dimensions of 450 × 210 × 211 mm enable it to dry up to 4 rolls of 1kg filament simultaneously. As a 3D printer filament dryer box built for multi-color and multi-printer workflows, the SUNLU 4-spool dryer keeps every roll ready to print without swapping filament in and out between jobs.

Rapid Heating & Efficient Drying
Equipped with a 350W PTC heater, this 3D printer filament dryer box heats up to 70°C for fast drying of specialty filaments such as PA and PC, as well as everyday materials, making it a reliable filament dryer for PLA and improving overall workflow efficiency.

Temperature Uniformity
Dual side circulation fans combined with a bottom heating fan maintain chamber temperature within ±3°C, ensuring even, reliable drying for every roll. This makes it a great choice whether you're running this 3D printed filament dryer for one material or several at once.

Triple Safety Protection
PTC thermistor, mechanical temperature switch, and software monitoring provide three levels of protection for this 3D filament dryer. Real-time temperature monitoring triggers alerts in case of anomalies, ensuring safe operation whether you're drying materials for filament dryer for 3D printing projects big or small.

Intelligent Humidity Control
SUNLU 4-spool dryer automatically adjusts chamber humidity, starting when humidity reaches the set range (30%–50%) and stopping when it drops to 25%, preventing filaments from reabsorbing moisture.

High Compatibility
Compatible with all printer models, this filament dryer 4 spools design supports simultaneous filament feeding for up to 4 printers and works with filament diameters of 1.75mm, 2.85mm, and 3.0mm.
Parameter Information

Color Code
| Color | Hex Code | Display |
|---|---|---|
| White | #FFFFFF | ![]() |
| Black | #000000 | ![]() |
| Grey | #75787B | ![]() |


