Polymaker PolyDryer Box (Storage Box Only)

The Polymaker PolyDryer Box is a sealed filament storage box designed for the PolyDryer system. It keeps a single spool protected from humidity between prints and lets you feed filament directly to your printer without opening the lid. This listing is for the storage box only; the heated Dry Dock and power adapter are sold separately.

Expand Your PolyDryer System

One PolyDryer Dry Dock can serve any number of PolyDryer Boxes. Add a box for each material you print regularly, store them side by side, and set any box on the dock whenever a spool needs drying. It is a practical way to build out a dry-storage setup for PLA, PETG, TPU, nylon, and other moisture-sensitive filaments without buying a separate dryer for every spool.

Sealed Storage You Can Print From

A latching lid and airlock fittings keep the box tightly sealed while filament feeds out through the top port, so the spool stays dry even during long prints. The built-in hygrometer shows the humidity inside at a glance, and color-changing silica gel desiccant turns from orange to dark green as it absorbs moisture. Saturated desiccant can be regenerated by placing the empty box on a PolyDryer Dry Dock, or by heating the desiccant in an oven or microwave.

Key Features

• Sealed latching lid designed to keep humidity out
• Built-in hygrometer and desiccant compartment
• Color-changing silica gel desiccant shows when it needs drying
• Spool roller for smooth unwinding
• Print directly from the box through the top feed port
• Holds spools up to 1 kg, including 500 g and 250 g sizes
• Docks onto the PolyDryer Dry Dock for drying (sold separately)
• Customizable with printable add-ons for hanging or linking boxes

Good to Know

The PolyDryer Box stores and protects filament on its own, but it does not heat. To dry filament or regenerate the desiccant inside the box, pair it with the PolyDryer Dry Dock. The standard box supports spools up to 1 kg.