SKU: 39282701410

SUNLU FilaDryer S4 3D Printer Filament Dryer Box

Sale price$180.00 Regular price$200.00
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Ships within 48 hours · Estimated delivery Sep 8 - Sep 13

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Description

SUNLU FilaDryer S4 3D Printer Filament Dryer BoxThe SUNLU FilaDryer S4 is the FIRST filament dryer to fit FOUR filaments at once! Features Holds up to 4 rolls of 1kg filament Eight filament holes for multiple filament drying and concurrent printing PTC heating element and 3 fans for quick heating to 70C PTC heater power: 330W, 6. 9 times stronger than S2 Pre configured temperature settings for PLA, ABS, PETG, TPU, PA, and PC available Adjustable temperature and heating time Auto humidity control

 

The SUNLU FilaDryer S4 is the FIRST filament dryer to fit FOUR filaments at once!

Features

  • Holds up to 4 rolls of 1kg filament
  • Eight filament holes for multiple filament drying and concurrent printing
  • PTC heating element and 3 fans for quick heating to 70°C
  • PTC heater power: 330W, 6.9 times stronger than S2
  • Pre-configured temperature settings for PLA, ABS, PETG, TPU, PA, and PC available
  • Adjustable temperature and heating time
  • Auto humidity control function
  • Two-level temperature control safety switch
  • Soft gel layer on roller prevents issues from high temperature
  • Compatible with 1.75mm, 2.85mm, 3.0mm diameter filaments
  • Compatible with all models of 3D Printers
  • Touchscreen control

 

SUNLU FilaDryer S4 comes with a design size of 458mm*218mm*312mm. It contains up to 4 rolls of 1kg filament. Plus, it is equipped with eight filament holes, and PTFE tubes, which meets the users' demands for drying multiple filaments and for concurrent printing while drying with multiple printers.

SUNLU FilaDryer S4 is equipped with the PTC (Positive Temperature Coefficient) heating element and a triple-fan configuration and therefore it demonstrates enhanced heating efficiency by being able to heat up to 70°C in a shorter amount of time. The PTC heater boasts a heating power of 330W, 6.9 times more powerful than SUNLU FilaDryer S2. The 3 well-positioned fans also ensure even heating and drying.

SUNLU FilaDryer S4 comes with pre-configured temperature settings of commonly used filaments such as PLA, ABS, PETG, as well as TPU, PA and PC. These configurations are based on testing data, providing optimal drying time and temperature. By expanding options while reducing setup complexities, we aim to improve your experience.

With the auto humidity control function, when the humidity in the box reaches the set value (30%-50%) it will automatically start until the humidity drops to 25%, and then stop, to better meet the humidity needs of different types of filaments.

Integrating the PTC heating element and a two-level temperature control safety switch design provides a dual-safeguard system. Moreover, a soft gel layer is applied to the roller to prevent issues caused by prolonged high-temperature exposure, effectively offsetting the risk of minor spool deformation that could rise rotational disruptions. 

SUNLU FilaDryer S4 supports all models of 3D printers connected to use; supporting 4 printers in drying filaments during printing. Compatible with filaments of diameter 1.75mm, 2.85mm, 3.0mm.


Specifications

  • Model: SUNLU FilaDryer S4
  • Heating Temperature: 70°C
  • Filament Capacity: 1KG x 4
  • Applicable Filaments Types: PLA, ABS, PETG, TPU, PA, PC etc
  • Compatible Filament Diameters: 1.75mm, 2.85mm, 3.0mm
  • Heater: PTC with 3 Fans
  • Heat Time (25°C to 50°C): 30mins
  • Heat Time (25°C to 70°C): 50mins
  • Interior Temperature Balance: ± 3°C
  • Humidity Regulation Mode: Auto-drying when humid
  • Desiccant: Yes
  • Touch Screen: Yes
  • LED Status Display: Yes
  • Filament Holes: 8 (PTFE available)
  • Power Input: AC 110V~240V 50Hz/60Hz 330W
  • Product Size: 458*218*312mm (including the height of the tripod)
  • Inner Size: 450*210*211mm
  • Net Weight: 4.8KG
  • Packaging Size: 516*278*350mm
  • Gross Weight: 5.5KG
  • QTY/BOX: 1pc
  • Colour: Black
  • Plug: SG/UK

 

Packing List

  • 1 x S4 drying box
  • 1 x power adapter (SG/UK Plug)
  • 1 x user manual
  • 2 x Teflon tubes (100cm)
  • 4 x Teflon tubes (8cm)

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 39282701410

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Jo Y.
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★★★★★ 4
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I really like this bag. It looks more expensive than it is. I get a lot of compliments. Roomie and lightweight. Just the right size for my purposes.
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Reviewed in the United States on January 30, 2026
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Nora Hands
Massapequa, US
★★★★★ 5
Perfect size for me!
Color: Black
I've had this bag for several months! It's in GREAT condition for the price that I got it for! I've had one maybe a couple stitches on the handle fray a little bit, but other than that it's holding up amazingly! Surprisingly it holds a lot, wallet, keys, small makeup bag, and a smaller bag for hair ties, pins, tampons and whatnot. It's very soft, the color doesn't fade! The material isn't hard leather, it's very maluable, making it fit wherever you put it, which is exactly what I was looking for. When this one eventually wears out, I'll 100% buy another one again because it's small and it matches every single one of my outfits!
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Reviewed in the United States on April 7, 2026
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Isabel Guzman
Phoenix, US
★★★★★ 3
Cute but cheaply made
Color: Black
I love this bag so much. However, I had to purchase twice because the first one broke due to the fabric on the inside catching on the zipper and when I tried to undo it, it ripped. The second bag still has problems with the zipper but it has stayed in good condition. The bag holds quite a lot and it’s really good. Overall I would say that bad is cheap but also lasts? Just be cautious of the zipper.
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Reviewed in the United States on September 28, 2025
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Geissy mirabal
Dallas, US
★★★★★ 5
Excelente compra
Color: White
A pesar de ser un bolso relativamente pequeño me sorprendió por el espacio que tiene,cabe lo mucho y lo poco ,sin dejar de ser muy lindo también
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Reviewed in the United States on May 28, 2026
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Amazon Customer
Port Orchard, US
★★★★★ 1
WORST PRODUCT I HAVE EVER BOUGHT- and I’m NOT picky.
Color: Black, Color: Black
DO NOT BUY. Genuinely the worst product I have ever bought. I’m not a picky person. But upon receiving this bag, I immediately felt iffy about the material of the bag. Then I opened it to get a whiff of a rancid fishy smell. As I’m not a picky person, and it was $20, I moved past these two immediate issues. My problem came on day 4 when the interior ripped. The material is so cheap it was not able to be sewn to be fixed. I was irritated, but was able to move on from even this. Day 6 of use was the final straw for me. The zipper got caught and completely stuck on the ripped material. While trying to wiggle it, the tab to pull the zipper came off. While again trying to get it open by hand, the zipper ripped completely open and part of the zipper track came off. This is THE MOST DISAPPOINTING ITEM I HAVE EVER BOUGHT. Absolutely DO NOT RECOMMEND. DO NOT GET THIS BAG. I don’t even want to give this one star.
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Reviewed in the United States on March 2, 2025

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