Polymaker PolyDryer 4-Pack Filament Storage Box Only (No Dock), Airtight Moisture Proof 3D Printer Spool Holder with Hygrometer for 1kg PLA PETG ABS TPU Nylon, Print Without Breaking Seal

Features

• CONSISTENT PRINTING CONDITIONS WITH SEAL + DESICCANT SUPPORT This filament storage box helps keep filament in a more stable printing state by combining sealed protection with desiccant support. It is designed to help reduce common moisture-related printing issues such as stringing, bubbling, clogging, and layer inconsistency during storage between prints.
• PRINTING WITHOUT BREAKING SEAL Built for airtight filament storage, this filament storage box helps lock in dryness and protect your spool between printing sessions. The sealed design supports print without breaking seal, making it easier to keep filament protected while feeding it directly for use.
• HUMIDITY CONTROL FILAMENT BOX WITH HYGROMETER Each box works as a humidity control filament box with hygrometer, so storage conditions are easier to monitor and track at a glance. This visible status reference helps users better judge when to refresh desiccant and maintain a more suitable environment for 3D printer filament storage.
• MULTI-FILAMENT READY FOR EVERYDAY STORAGE Designed for common 3D printing materials, this filament holder box supports everyday filament storage needs across multiple filament types. Compatible with common filament types including PLA, PETG, ABS, ASA, TPU, PVB, and PA/Nylon, and supports 1.75mm, 2.85mm and 3.00mm filament, up to 1kg spool.
• 4-PACK CONVENIENCE FOR CLEAN, PRACTICAL WORKSPACE SETUP The 4-pack format makes it easier to sort, rotate, and manage multiple spools for different projects or material types. With a compact, practical design that fits neatly into your workspace, this moisture proof container setup is daily-use friendly and easy to integrate into a clean desktop workflow. (Note: This includes 4 storage boxes only.)