--- product_id: 625947766 title: "SUNLU Official Filament Dryer S4, 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control/Fast Heating/Temperature Balance, Filaments Storage Box White" brand: "sunlu" price: "439439CFA" currency: XOF in_stock: true reviews_count: 13 category: "Sunlu" url: https://www.desertcart.sn/products/625947766-sunlu-official-filament-dryer-s4-3d-printer-filament-dry-box store_origin: SN region: Senegal --- # 350W rapid heating Triple fan airflow 4-spool capacity SUNLU Official Filament Dryer S4, 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control/Fast Heating/Temperature Balance, Filaments Storage Box White **Brand:** sunlu **Price:** 439439CFA **Availability:** ✅ In Stock ## Summary > 🔥 Keep your filament fresh, your prints flawless, and your workflow unstoppable! 🎯 ## Quick Answers - **What is this?** SUNLU Official Filament Dryer S4, 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control/Fast Heating/Temperature Balance, Filaments Storage Box White by sunlu - **How much does it cost?** 439439CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/625947766-sunlu-official-filament-dryer-s4-3d-printer-filament-dry-box) ## Best For - sunlu enthusiasts ## Why This Product - Trusted sunlu brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Lightning-Fast Heat-Up:** Reach optimal drying temperature in just 30 minutes with a powerful 350W PTC heater. - • **Precision Climate Control:** Auto humidity regulation keeps filament moisture perfectly balanced between 30%-50%. - • **Triple-Layer Safety Shield:** PTC heater, temperature switch, and software alerts ensure worry-free, unattended drying. - • **Maximize Multi-Color Printing:** Dry up to 4 filament spools simultaneously for seamless multi-material projects. - • **Uniform Drying with Triple Fans:** Three strategically placed fans maintain ±3℃ temperature balance for consistent filament quality. ## Overview The SUNLU Official Filament Dryer S4 is a cutting-edge 3D printer filament dry box designed for professionals who demand efficiency and reliability. It accommodates 4 spools simultaneously, heats rapidly with a 350W PTC heater, and features smart auto humidity control to prevent filament degradation. Triple fans ensure even drying, while triple safety mechanisms provide peace of mind during long print sessions. Compact yet powerful, it’s the ultimate upgrade for maintaining premium filament quality and uninterrupted multi-material 3D printing. ## Description Product Description SUNLU S4 FilaDryer — New Generation Filament Dryer Box Review: Great 4-spool filament dryer with easy touchscreen controls - I picked this up mainly to help manage my filament better, and it’s been really useful from day one. It works straight out of the box with very little setup, and heats up quickly. I’ve used it with a range of materials like PLA, PETG and ABS so far, and it handles them without any issues. One of the biggest advantages is the capacity — being able to dry up to 4 spools at once is a big plus if you print regularly. I also really like that you can either dry filament on its own or feed it directly into your printer using the included PTFE tubes, which makes everything much more convenient. The touch screen is great - i’s good size and easy to use - you can quickly select filament types, adjust temperature/timing without having to mess around with complicated settings. It’s also fairly compact for what it does, so it doesn’t take up too much space. In terms of value, I got it on offer and it felt like excellent value for money, especially considering how much it can do. A couple of things to be aware of: it does generate a fair amount of heat, which is expected, so it’s best used somewhere with good ventilation. There’s also a bit of background noise, but nothing too distracting. Overall, this is a very practical upgrade if you print regularly and want to keep your filament in good condition, especially if you work with multiple materials. Review: An excellent multi roll capable filament dryer that does the job with confidence. - Well designed and implemented, unlike quite a few on the market it dries filament effectively, and evenly without hot spots on the filament rolls, average temperature throughout the chamber is accurate when it has had time to fully stabilise. The large touch screen control interface is straight forward, clear and just plain works. Can also print up to 4 rolls at a time straight from the machine itself if needed, by making use of the numerous bowden connector points. Also coming from an electrical background I took the time to look over the units internals and find the one I have to apparently match its claims of appropriate safety measures; therefore I have some degree of confidence about leaving it unattended whilst I see to other tasks. The only minuses I can think of is the plastic the front panel is made from is prone to attracting dust like mad, I would suggest cleaning with some manner of spray compatible with plastics that claims to have anti-static properties. not a big deal, but mildly irritating. Other than that, it has some gimmicky pulsing lights that come on below the reels in the chamber that are not to my personal tastes - it is however pretty straight forward to turn these off. Highly recommended, I expect it would be hard to find an objectively better filament dryer than this for standard filaments at any price point. ## Features - ①【4 Spools in 1 Box】Experience uninterrupted 3D printing with SUNLU New S4 Filadryer– the first filament dryer box that effortlessly handles 4 spools 1KG 3D Printer Filament simultaneously.With the new generation filament drying box, we can embrace the freedom of multi-color and multi-machine 3d printing. - ②【Updraded Lightning-Fast Heating】Get to heating quicker with the S4 filament dry box's impressive 350W PTC heater. In just 30 minutes, it heats up from 25℃ to 50℃, ensuring 50% faster and more efficient heating than other filament dryer box in the market. Efficiency meets speed for a next-generation 3d printing experience. - ③【Triple Security for Worry-free Printing】Rest easy knowing the S4 filament storage box prioritizes your safety. Its triple-layer security – PTC, temperature switch, and software protection – keeps a vigilant eye on temperatures, ensuring a worry-free 3d printing environment with real-time alerts for any unexpected changes. - ④【Triple Fans for Uniform Drying】SUNLU New generation S4 filament dehydratorr equipped with three build-in fans – two circulating fans on the sides and 1 on the bottom. It maintains a temperature balance inside the box within ±3℃, guaranteeing optimal drying for every section of the filament. Efficiently rescue your wet filaments. - ⑤【Smart Auto Humidity Control】3D printing users can adjust the internal humidity by mode 2(humidity range 30%~50%). The S4 dryer will auto start drying when humidity hits your desired range, ensuring your filament stays dry. And will stop drying when humidity below 25%, catering to avoid excessive drying of the filament. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | SUNLU | | Colour | White S4 | | Compatible devices | Laptop, Desktop | | Item weight | 4 Kilograms | | Material | Plastic Filament | | Product dimensions | 21.1D x 21W x 21.1H centimetres | ## Product Details - **Brand:** SUNLU - **Colour:** White S4 - **Item weight:** 4 Kilograms - **Material:** Plastic Filament - **Product dimensions:** 21.1D x 21W x 21.1H centimetres ## Images ![SUNLU Official Filament Dryer S4, 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control/Fast Heating/Temperature Balance, Filaments Storage Box White - Image 1](https://m.media-amazon.com/images/I/61wMFCieieL.jpg) ![SUNLU Official Filament Dryer S4, 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control/Fast Heating/Temperature Balance, Filaments Storage Box White - Image 2](https://m.media-amazon.com/images/I/71qKO7FOH1L.jpg) ![SUNLU Official Filament Dryer S4, 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control/Fast Heating/Temperature Balance, Filaments Storage Box White - Image 3](https://m.media-amazon.com/images/I/71y6HP6vTXL.jpg) ![SUNLU Official Filament Dryer S4, 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control/Fast Heating/Temperature Balance, Filaments Storage Box White - Image 4](https://m.media-amazon.com/images/I/71PoEoeASVL.jpg) ![SUNLU Official Filament Dryer S4, 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control/Fast Heating/Temperature Balance, Filaments Storage Box White - Image 5](https://m.media-amazon.com/images/I/71+EB+OSoHL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great 4-spool filament dryer with easy touchscreen controls *by O***K on 20 March 2026* I picked this up mainly to help manage my filament better, and it’s been really useful from day one. It works straight out of the box with very little setup, and heats up quickly. I’ve used it with a range of materials like PLA, PETG and ABS so far, and it handles them without any issues. One of the biggest advantages is the capacity — being able to dry up to 4 spools at once is a big plus if you print regularly. I also really like that you can either dry filament on its own or feed it directly into your printer using the included PTFE tubes, which makes everything much more convenient. The touch screen is great - i’s good size and easy to use - you can quickly select filament types, adjust temperature/timing without having to mess around with complicated settings. It’s also fairly compact for what it does, so it doesn’t take up too much space. In terms of value, I got it on offer and it felt like excellent value for money, especially considering how much it can do. A couple of things to be aware of: it does generate a fair amount of heat, which is expected, so it’s best used somewhere with good ventilation. There’s also a bit of background noise, but nothing too distracting. Overall, this is a very practical upgrade if you print regularly and want to keep your filament in good condition, especially if you work with multiple materials. ### ⭐⭐⭐⭐⭐ An excellent multi roll capable filament dryer that does the job with confidence. *by M***L on 16 July 2025* Well designed and implemented, unlike quite a few on the market it dries filament effectively, and evenly without hot spots on the filament rolls, average temperature throughout the chamber is accurate when it has had time to fully stabilise. The large touch screen control interface is straight forward, clear and just plain works. Can also print up to 4 rolls at a time straight from the machine itself if needed, by making use of the numerous bowden connector points. Also coming from an electrical background I took the time to look over the units internals and find the one I have to apparently match its claims of appropriate safety measures; therefore I have some degree of confidence about leaving it unattended whilst I see to other tasks. The only minuses I can think of is the plastic the front panel is made from is prone to attracting dust like mad, I would suggest cleaning with some manner of spray compatible with plastics that claims to have anti-static properties. not a big deal, but mildly irritating. Other than that, it has some gimmicky pulsing lights that come on below the reels in the chamber that are not to my personal tastes - it is however pretty straight forward to turn these off. Highly recommended, I expect it would be hard to find an objectively better filament dryer than this for standard filaments at any price point. ### ⭐⭐⭐⭐⭐ Essential to dry out filament *by K***N on 8 April 2026* Absolutely brilliant, noisy but drys out filament and improves prints so much. Wish the outlets were better positioned for MMU but otherwise works brilliantly! ## Frequently Bought Together - SUNLU Official Filament Dryer S4, 2025 Newest 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control/Fast Heating/Temperature Balance, Filaments Storage Box White - ELEGOO PLA+ Filament 1.75mm Black 1KG, PLA Plus Tougher and Stronger 3D Printer Filament, Dimensional Accuracy +/- 0.02mm, 1kg Cardboard Spool(2.2lbs) for Most FDM 3D Printers --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/625947766-sunlu-official-filament-dryer-s4-3d-printer-filament-dry-box](https://www.desertcart.sn/products/625947766-sunlu-official-filament-dryer-s4-3d-printer-filament-dry-box) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-07-14*