120mm Carbon Filter

I've accommodated a 5015 blower fan and a carbon filter within the size of a 120mm fan. I designed this air filtration system with the aim of replacing existing 120mm fans in the enclosure without significantly lowering the temperature.Being of a universal 120mm size, it should be suitable for various applications. This project is inspired by Nevermore Micro V4.Notes:Please select either the heat-set nut version or the square nut version for the Filter Cartridge.Since it is assumed that the 4 corners will be secured with screws, the FrameTop panel is not fixed. Please glue it if necessary.The thickness of this is 3mm thinner than the 25.5mm of the 120mm fan, measuring 22.5mm.Required other than printed parts:1x 5015 blower fan (I recommend double-ball bearing)Acid-free Activated carbon pellets2x M3x8mm2x M3x5x4mm heat-set Inserts or 2x M3 square nutsPrint Parts:Print a total of 5 parts ‘Frame’, 'FrameTop', ‘Filter_Cartridge’, ‘Filter_Cartridge_Lid’ and 'Centering_Jig&#3