PolyDryer Box — Sealed Filament Storage (Standard & XL)
PolyDryer Box — Sealed Filament Storage (Standard & XL)
In stock
ETA:
- 90-Day Warranty
- 30-Day Return
- 7-Day Delivery

PolyDryer Box Overview
Product Description
The PolyDryer Box is a sealed filament storage box built for the Polymaker PolyDryer modular drying system. Choose Standard for common spools (up to 1 kg) or PolyDryer Box XL for larger spools (up to 3 kg) with a built-in hygrometer for easier humidity checks. Store filament in a protected, moisture-resistant enclosure, then swap the box onto a PolyDryer Dry Dock when you want controlled drying.
Why Add an Extra PolyDryer Box (or XL)?
An extra polydryer box lets you keep more filament sealed between prints, then move the box onto your PolyDryer Dry Dock whenever you need active drying. If you use larger spools or want visible humidity tracking, the PolyDryer Box XL supports up to 3 kg spools and adds a built-in hygrometer
Key Features & Requirements
- Sealed storage helps protect filament from moisture, dust, and contaminants
- Designed for the Polymaker PolyDryer modular system
- Swap multiple PolyDryer Boxes onto one Dry Dock for continuous filament protection
- Two size options: Standard (up to 1 kg spools) and Box XL (up to 3 kg spools, built-in hygrometer)
- Supports sealed feeding / print without breaking the seal (XL listing feature; workflow depends on setup)
- Supports filament diameters 1.75 mm / 2.85 mm / 3.00 mm
Product Specification
- Standard Box: fits typical spools up to 1 kg
- Box XL: fits spools up to 3 kg; built-in hygrometer; supports sealed feeding (“print without breaking seal”)
- Filament diameters: 1.75 mm / 2.85 mm / 3.00 mm
- Compatibility note (XL): compatible with PolyDryer Dock via bracket included with the XL package
- Airflow / heat control: provided by Dry Dock (system feature; PTC heater + preset power levels)
Better Than: Sealed performance vs Typical Dryers
Covers both Standard and Box XL sizing so users can match spool weight and workflow
Modular: keep multiple spools sealed and rotate them onto one drying dock
Adds humidity visibility (XL hygrometer) for easier storage management
Package Includes
PolyDryer Box × 1 (storage box unit; select Standard or XL variant)
Installation Guide
Explore Precision Upgrades for Your Bambu Lab
Explore Precision Upgrades for Your Bambu Lab
Explore Precision Upgrades for Your Bambu Lab
Explore Precision Upgrades for Your Bambu Lab
FAQs about PolyDryer Box — Sealed Filament Storage (Standard & XL)
Do I need the PolyDryer Dry Dock to use the PolyDryer Box / Box XL?
Both boxes can work as sealed storage containers on their own, but active heated drying requires the PolyDryer Dry Dock. The modular idea is to keep multiple boxes sealed, then dock the one you want to dry.
Why does my PLA still read 45% humidity after drying on Level 1 for 6 hours?
This can be normal if moisture has nowhere to escape or if the desiccant pack is also being dried inside the box. For heat drying in the PolyDryer Box, open the top and side vent caps so moisture can leave the box. Remove the desiccant pack before drying unless you are sure it is already dry, so the drying target is only the filament, not the desiccant as well. A practical workflow is to open both small vent caps, remove the desiccant box, set the drying time to continuous/overnight, and let the PLA dry overnight before printing.
How can I make sure this product fits my printer?
A: You can check the compatibility information in our product filters or in the Features section of each item. If you’re still unsure which part is right for your printer model, feel free to contact our support team for confirmation.
How can I track my order?
You will receive a YunExpress order number immediately after your order ships.Use this number to track the package from our warehouse to your destination country.
For the following countries, you will also receive a corresponding local tracking number.Please use the official website of the local carrier for real-time delivery updates:
- United States: USPS
- Germany & Netherlands: DHL
- United Kingdom: Evri
- Spain: CTT
- France: Colis Privé
For all other regions: Only a YunExpress tracking number will be provided (no local carrier tracking available).
What if the tool I purchased doesn’t meet my expectations?
If you’re not satisfied with your purchase, we offer a hassle-free return policy. Just contact our customer support team within 30 days, and we'll help you with the return or exchange process.
Customer reviews
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Placed my order on February 3rd and received it on February 12th —only 7 business days! Shopping was easy, communication was great, and delivery times were really decent. Very happy with my purchase!
Brad BrockwayEngineering -
Found this shop on Reddit, chatted with a real person about the P2S filter I needed. Asked if they could ship to SG, they checked and made it happen! Super happy because this filter is basically impossible to find locally and always out of stock everywhere else. Fast, friendly, and solved my problem perfectly. Will buy again!
Ok_Government_1125Hobbyist in Singapore -
Bought a ventilation system but changed my mind last minute. I thought returns would be a huge hassle, but they told me there’s a return warehouse in Houston only about a 10-minute drive from where I live in Missouri City. Drove over and returned it super easily. Super convenient return process, great experience overall!
RayRobertProject manager
The packaging was very good—otherwise it probably would have been damaged. Overseas shipping was a bit slow, but still acceptable.
Great product. The seal is genuinely strong—much better than the Bambu AMS HT and AMS 2 Pro in my experience. I left it sealed for a week and there was no leakage at all.
PolyDryer Box — Sealed Filament Storage (Standard & XL)