---
product_id: 603660901
title: "SUNLU Official Filament Dryer S4, 2026 Newest 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control, Fast Heating, Temperature Balance, Filaments Storage Box"
brand: "sunlu"
price: "₩543881"
currency: KRW
in_stock: true
reviews_count: 13
category: "Sunlu"
url: https://www.desertcart.kr/products/603660901-sunlu-official-filament-dryer-s4-2026-newest-3d-printer-filament
store_origin: KR
region: South Korea
---

# 350W fast heating 4-spool capacity ±3℃ temp balance SUNLU Official Filament Dryer S4, 2026 Newest 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control, Fast Heating, Temperature Balance, Filaments Storage Box

**Brand:** sunlu
**Price:** ₩543881
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay Dry, Print High: The Ultimate 4-Spool Filament Guardian

## Quick Answers

- **What is this?** SUNLU Official Filament Dryer S4, 2026 Newest 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control, Fast Heating, Temperature Balance, Filaments Storage Box by sunlu
- **How much does it cost?** ₩543881 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/603660901-sunlu-official-filament-dryer-s4-2026-newest-3d-printer-filament)

## 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:** 350W PTC heater reaches 50℃ in just 30 minutes—50% faster than competitors.
- • **Smart Humidity Control:** Auto-start/stop drying between 30%-50% humidity to prevent filament damage and over-drying.
- • **Maximize Your Print Runs:** Holds 4 spools simultaneously for uninterrupted multi-color, multi-machine 3D printing.
- • **Triple-Layer Safety Shield:** PTC, temperature switch, and software protection keep your prints safe with real-time alerts.
- • **Uniform Drying, Zero Hotspots:** Three built-in fans maintain consistent temperature and humidity for flawless filament quality.

## Overview

The SUNLU Official Filament Dryer S4 is a cutting-edge 3D printer filament dry box designed for professionals who demand flawless prints. Featuring a spacious 4-spool capacity, rapid 350W heating, and precise temperature control within ±3℃, it ensures your filaments stay perfectly dry and ready. Its triple safety system and smart auto humidity control deliver peace of mind and optimal filament preservation, compatible with nearly all FDM filaments and printers. Elevate your 3D printing workflow with this sleek, efficient, and reliable filament dehydrator.

## Description

From the brand SUNLU New FILADRYER S4 Visit the store SUNLU New FILADRYER S4 Visit the store Multicolor Filament Bundle Visit the store Multicolor Filament Bundle Hot/New Product Visit the store Hot/New Product High Toughness PLA+ Filament Visit the store High Toughness PLA+ Filament PLA Matte Filament Visit the store PLA Matte Filament High Speed PLA up to 600mm/s Visit the store High Speed PLA up to 600mm/s PETG 3D Printer Filament Visit the store PETG 3D Printer Filament High Speed PETG Filament Visit the store High Speed PETG Filament Functional PA6CF filament Visit the store Functional PA6CF filament Colorful Macaron PLA PLUS Visit the store Colorful Macaron PLA PLUS Functional ABS Filament Visit the store Functional ABS Filament TPU Filament Visit the store TPU Filament Rainbow Series 3D Filament Visit the store Rainbow Series 3D Filament Filament Dryer Box Visit the store Filament Dryer Box Special Colors 3D Filament Visit the store Special Colors 3D Filament Water Washable 3D Resin Visit the store Water Washable 3D Resin

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.
Review: Superb - been great for rotating my filaments - The **SUNLU Official Filament Dryer S4** is a game-changing accessory for 3D printing enthusiasts, designed to ensure optimal filament performance. This **new generation 3D printer filament dry box** helps maintain the quality of your filament by removing excess moisture that can compromise print quality. Whether you're using PLA, ABS, PETG, or other filaments, the **S4 dryer box** keeps them dry and ready for use. Featuring an **adjustable temperature control** and a **user-friendly interface**, the dryer allows you to customize settings based on the filament type. The **built-in timer** ensures consistent drying without overexposing your materials. Its compact and sleek design makes it easy to integrate into any workspace, while the **clear viewing window** lets you monitor the filament without opening the box. For those who value high-quality, consistent 3D prints, the **SUNLU Filament Dryer S4** is an indispensable tool. It helps prevent issues like stringing, bubbling, and weak layer adhesion, ensuring your prints come out perfect every time. A must-have upgrade for anyone serious about 3D printing!

## Features

- ①【Large Space for Endless Printing】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.
- ⑥【Universal Compatibility】Compatible with all FDM 3D printers, the S4 filament dryer supports connection to 4 printers simultaneously, accommodating 99.99% of filaments in the market. SUNLU has over 10 years of experience in the 3D printing industry and a professional after-sales team to make your printing worry-free.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CPLNR989 |
| Best Sellers Rank | 8,400 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 204 in 3D Printer Accessories |
| Brand | SUNLU |
| Colour | black |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,033) |
| Date First Available | 19 Jan. 2024 |
| Item Weight | 4 kg |
| Manufacturer | SUNLU |
| Manufacturer Part Number | SLJP-FD-S4-BK-JP-GMAWDE |
| Material Type | Plastic |
| Model Number | SUNLU Filament Dryer S4 |
| Product Dimensions | 21.1 x 21 x 21.1 cm; 4 kg |

## Product Details

- **Brand:** SUNLU
- **Colour:** black
- **Item weight:** 4 Kilograms
- **Material:** Plastic
- **Product dimensions:** 21.1D x 45W x 21.1H centimetres

## Images

![SUNLU Official Filament Dryer S4, 2026 Newest 3D Printer Filament Dry Box, Upgraded 4-Spool Filament Dehydrator, Auto Humidity Control, Fast Heating, Temperature Balance, Filaments Storage Box - Image 1](https://m.media-amazon.com/images/I/71O8OpWPehL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Superb - been great for rotating my filaments
*by A***W on 12 January 2025*

The **SUNLU Official Filament Dryer S4** is a game-changing accessory for 3D printing enthusiasts, designed to ensure optimal filament performance. This **new generation 3D printer filament dry box** helps maintain the quality of your filament by removing excess moisture that can compromise print quality. Whether you're using PLA, ABS, PETG, or other filaments, the **S4 dryer box** keeps them dry and ready for use. Featuring an **adjustable temperature control** and a **user-friendly interface**, the dryer allows you to customize settings based on the filament type. The **built-in timer** ensures consistent drying without overexposing your materials. Its compact and sleek design makes it easy to integrate into any workspace, while the **clear viewing window** lets you monitor the filament without opening the box. For those who value high-quality, consistent 3D prints, the **SUNLU Filament Dryer S4** is an indispensable tool. It helps prevent issues like stringing, bubbling, and weak layer adhesion, ensuring your prints come out perfect every time. A must-have upgrade for anyone serious about 3D printing!

### ⭐⭐⭐⭐⭐ The Sunlu S4 dryer is an impressive and budget-friendly option
*by K***N on 19 September 2025*

The Sunlu S4 dryer is an impressive and budget-friendly option for both beginners and seasoned hobbyists. It offers a solid build quality, and a user-friendly interface. The setup is straightforward, and the quality is decent for the price, it provides excellent value for money, especially for those just starting with 3D printing or those looking for a reliable dryer holds 4 rolls

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-03*