This box can store four filaments simultaneously. The boxes can be stacked, saving space and allowing you to store many filaments. I've used fan-type and heated filament boxes, but they didn't work as well as I hoped, so I made my own box. Since using this, filaments are usable without problems unless they've absorbed moisture from the start. A designer who uses a 3D printer every day confidently offers this product. ● The inside of the box is sealed, and desiccant is included, so the humidity inside the box is kept low even on rainy days. With four outlets, you can change filament colors without opening the box lid. ● If you have an Ender3 or v2 series printer, you can place the box on the left side of the printer. If you have an Ender3 S1 series printer, you can place it behind the printer, and use the filaments while they are still in the box. ● No power required for moisture-proof function. Moisture-absorbing material is included. It needs to be replaced every few months. ● Includes a temperature and humidity gauge. The analog temperature and humidity gauge does not require battery replacement. ● Can be stored vertically, saving space. ● There are four filament outlets, and Teflon tubes are used, so the filament comes out smoothly. (If you don't use all four, cut the filament and insert it. This will maintain moisture protection.) ● The lid has moisture-proof packing. ● I use a 3D printer every day in my work, and it's very helpful, with no moisture absorption. ● You can store four filaments at the same time, and it doesn't cost electricity, so it's the best value for money. ● This product is priced for one box. ● Customers in Okinawa, Hokkaido, and remote islands, please send a message before purchasing as the shipping cost will be higher. #sakura3dlab #filamentbox #3Dprinter #PLA #Ender3 #filament #3Dprintermaterials