SUNLU Official 3D Printer Filament Dryer S4, 4 Spools Capacity, 3 Circulation Fans, 350W PTC Heater, 70℃ Max Temperature, Power Saving Storage Mode, Nylon TPU PLA PETG ABS Filament Dryer Box, White
Condition: New
Buy Now, Pay Later
As low as
$19.50
/ mo
Learn more
- – 6-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
Only 1 left in stock, order soon!
Arrives
Friday, Mar 20
Size: 4 Spools Capacity Filament Dryer
Color: White S4
Features
- 4 Spool Capacity: SUNLU filament dryer S4 can dry up to four 1kg 3D printer filaments, enhancing drying efficiency and printing quality when drying while printing.
- Filament Dryer S4 Size: SUNLU filament dryer S4 is notably large in size. External size-460(L)*220(W)*310(H)mm, internal size-450(L)*175(W)*207(H)mm, net weight-4KG.
- 8 Filament Exit Holes: SUNLU filament dryer S4 features eight filament outlets, ideal for multiple printers and various filament loading angles, smoother loading and printing.
- 350W PTC Heater: SUNLU filament dryer S4 is equipped with a 350W PTC heater, offering safety and higher heating efficiency (50% higher than the FilaDryer S2).
- 3 Circulation Fans: Three high-quality fans circulate air inside, ensuring consistent temperature across the entire area for more even drying, 360 surround heating.
- Temperature Adjustment and Timer: Temperature setting range is 35-70C, timer setting range is 0-99 hours. Users can adjust parameters to suit filament conditions.
- High Compatibility: SUNLU filament dryer S4 supports a wide range of materials including PLA, PLA Plus, PLA Meta, PETG, ABS, TPU, PA, PC, Nylon, etc., compatible with 1.75mm, 2.85mm, and 3.00mm.
- DIY More Possibilities: SUNLU filament dryer S4 can be modified to dry 3kg large rolls of filament or function as a shoe dryer. We've created a video to demonstrate the process. Feel free to check out more details!
- SUNLU S4 Packing List: FilaDryer S4 *1, Power Cable *1, 8cm PTFE Tube *4, 100cm PTFE Tube *2, User Guide *1, Pieces of Clips, Pieces of Silicone Plugs.
- SUNLU Main Products: SUNLU provides a diverse selection of premium 3D printing solutions, including 3D printer filament, filament dryers, FDM 3D printers, 3D printer resin, LCD 3D printers, resin curing boxes, 3D pens, filament refills and various accessories, ensuring all you need for a rewarding 3D printing experience.
Brand: SUNLU
Material: 3 Circulation Fans Filament Dryer, 4 Spools Capacity Filament Dryer, Acrylonitrile Butadiene Styrene, Polycarbonate, SUNLU 3D Printer Filament Dryer S4, SUNLU FilaDryer S4 See more
Color: White S4
Item Weight: 4 Kilograms
Item Diameter: 1.75 Millimeters
Product Dimensions: 18.11 x 8.66 x 12.2 inches
Item Weight: 8.8 pounds
Item model number: SUNLU Filament Dryer S4
Date First Available: March 1, 2024
Manufacturer: SUNLU
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Mar 20
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Size: 4 Spools Capacity Filament Dryer
Color: Black S4
So far it has performed very well. Living in San Diego humidity hasn't been a big problem with the filament I am using, but my prints usually take several hours, even days to complete and I don't want a failure due to moisture in my filament. I like that I can dry 4 rolls at once
Reviewed in the United States on February 28, 2026 by Bubba
Size: 4 Spools Capacity Filament Dryer
Color: Black S4
This is a solid working machine. Certainly assist in drying filaments
Reviewed in the United States on January 4, 2026 by R Hacker
Size: 4 Spools Capacity Filament Dryer
Color: Black S4
Overall, I’m very pleased with the S4. It does what it’s supposed to-dry filament-with the added bonus of being able to load 4 spools at once. Quite an upgrade from my old single spool dryer. Controls are easy to use, it’s not terribly loud (then again, I have an S1 in my bedroom and that noise doesn’t bother me either), and it’s very easy to print directly from the unit thanks to the numerous outlets for filament-4 on top, 2 on each end. If I have one complaint, it’s the lids. I’d have preferred that Sunlu make them permanently attached because these are a little difficult to keep on. When opening the dryer you have to push in a little tab on the lid and if the lid isn’t firmly seated, you’ll push it out. A very minor gripe but considering how well it’s built and how well it works, I’ll live with it.
...
show more
Reviewed in the United States on May 9, 2025 by MH205
Size: 4 Spools Capacity Filament Dryer
Color: Black S4
So glad I purchased this. I was having severe humidity issues with my filament that was impacting print quality or causing prints to fail. As soon as I started using this dryer those issues went away immediately. Only critiques I have : I wish it had 4 outputs on each end instead of just 2. With the way my printer is setup I could use 4 better than just 2 on one end. The plastic is a bit darker than the images show so it's not easy to see the filament spools. NOTE : If your printer has a printhead lift sensor and error detection, make sure you don't put it too far from the printer. In my case, too much tube caused sufficient friction to impact filament flow causing the printhead to occasionally lift enough to trigger an error on Snapmaker Artisan. Once I moved things around a bit and shortened the tube a bit the issue went away. Also make sure the tube has no significant curves.
...
show more
Reviewed in the United States on October 26, 2025 by Scifideity
Size: 4 Spools Capacity Filament Dryer
Color: White S4
I have the S4 under my Bambu AMS lite. I have to place my AMS on top of it because of the distance limitation of it to my printer. Here’s the thing: it’s a huge pain come time to switch filaments out from the S4 because I have to try to move/balance my AMS each time. I then also have to awkwardly try to keep the S4 door propped open. Okay granted, not everyone will have this setup, AND I do plan on modding this. But even so, because of the orientation, it’s very hard to see and reach the “back” side (right side) to switch filaments. I’m a short individual, but it has more to do with the way the doors hinge open. It would be nice if all sides had a window to see into the dryer through. This seems a little more complicated, but it would be perfect if all sides had a door to access/switch filaments through. All of this being said, it is a very good filament dryer and dispenser. The controls could be a little more friendly, as in, the touch screen is really nothing fancy. As far as the 4 touch buttons, they could have just as easily been physical clickable buttons with the trade off of a nicer display (or, ya know, a better door situation). Value for money: good! I would repurchase it. The way that I can set and forget and keep 4 spools ready to go at a time is fantastic. The auto on/off feature based on the current humidity and temp is the best feature about it. If you’re someone who does multicolor prints often and/or prints daily, I would definitely recommend this dryer.
...
show more
Reviewed in the United States on February 2, 2025 by Riv Riv
Size: 4 Spools Capacity Filament Dryer
Color: Black S4
Reliable and super quiet. I've had one of these for a year and bought two more recently. They're set to run anytime the humidity gets high enough. Love them.
Reviewed in the United States on February 6, 2026 by Giraffe
Size: 4 Spools Capacity Filament Dryer
Color: Black S4
easy to use and needed for working with some filaments to make sure your projects come out correctly
Reviewed in the United States on January 23, 2026 by Bob
Size: 4 Spools Capacity Filament Dryer
Color: Black S4
Can't even get the thing to turn on anymore. When I plug it in or flip the power switch on the back, the screen lights up for about a second then goes dark again. When it worked it seemed okay, although it's a very cumbersome device, the lid is finicky and having the rolls stored in a 2x2 setup just makes the whole thing a hassle to feed filament from. I bought this specifically because Sunlu advertises this as having a 3d-printable extension for 3kg spools except the .stls are buried on their website and the models themselves are awful with broken geometry that doesn't fit on any regular consumer printer's buildplate and the sides aren't even perpendicular so it can't even lie flat. After some heavy edits within Prusaslicer I was able to get it to print but it's still a massive waste of filament and not something I'd recommend at all. The fact that it died after 4 months is just icing on the cake. Buy a few smaller dryers for your spools and call it a day, don't waste your money on this. Edit: After some fiddling, I have managed to get the dryer working again but even with a brand new power cable it has to be angled and weighed down in a specific way to stop the machine from randomly turning off. A consumer device with this fragile of a power interface is still crummy and I still don't recommend it.
...
show more
Reviewed in the United States on May 1, 2025 by Unix