sunlu filament dry box - 3kg filament storage box with hygrometer | airtight sunlu box for 3d printer filament protection, works with sp2 dryer base, compatible with pla/petg/tpu/abs/nylon is up for auction in Industrial & Scientific. The current bid is $3.50, 90% below the $35.00 MSRP, in As Is condition. This auction has ended — similar items appear in live auctions regularly.