Custom filter housing for a 3d printer enclosure

This is my take on a custom clam-shell design filter housing for a 3d printer enclosure. These types of filter designs and configurations attempt to filter particulates and volatile organic compounds (VOCs) emitted during printing of ABS (for example) without the need for venting the fumes to the outside. The housing accommodates 2x80mm computer fans to drive air through a common HEPA filter number 86889 and an activated carbon cut-to-size filter sheet. These items can be found on Amazon: https://www.amazon.com/AC-Infinity-MULTIFAN-Receiver-Playstation/dp/B00IJ2J2K0/ref=sr_1_4?crid=25I2FIXIZOPAC&dib=eyJ2IjoiMSJ9.msUDqyht-lU4fPuEeTegTtICtaWHexfjTkFpwtU4AexjWRyv18xEQhfrclYEwliri6ENRZDmJb7wDFR2gqY1LcYgCb2TsMv9rBgMzPPCc78bS_BhbQOBS8LVtdm8bAl1rCZ9wSLVmNGpzfaMJrQj9dJkJfBE7WHkugM6jSdYLlqvSy-Vx4ajrersgVSWo8nYvFBl3orD1-W1IlKsR488jXjXTNj0SR4VpwjSAhAHouE.Ar0pOZB-vrdNm7cl7M5v2rv1hafidXG1zk4cPqxzYfc&dib_tag=se&keywords=80mm%2Bfan&qid=1772403311&sprefix=80mm%2Bfan%2Caps%2C170&sr=8-4&th=1 https://www.amazon.com/dp/B0C2CL69BN?ref=ppx_yo2ov_dt_b_fed_asin_title https://www.amazon.com/dp/B0DS2WJ459?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1 The fans above are 5v USB powered and already come with an on/off switch so all that is needed is a USB charger or a free USB port (on a Raspberry PI running OctoPrint, for example). Using 12v fans would require additional custom power source and wiring, but potentially could provide higher flow rates. The 5v fans provide about 50CFM unobstructed, but with the HEPA filter inline this drops significantly to maybe 1-2CFM. Nevertheless, for a typical enclosure of 2x3x3=18CF, the lower flowrate would still filter the entire content of the enclosure in about 9-18 minutes. Here is an example of an enclosure: https://www.amazon.com/Enclosure-Fireproof-Dustproof-Temperature-Protective/dp/B0995VTBLS/ref=sr_1_4?crid=361BJEIL09Q2N&dib=eyJ2IjoiMSJ9.oFI2rjJ1hRdu7nIEyM1OE2vO604058t-aQ1nNuAkzgk1cJD5292Az1vtjrril06FjqMyY7tMbYuyqFKDcxAx6jPVtXuGhnu0RBX5DRspQ4KKwDrkM9t4JH-qI29S3lrnoVIucMdR0T8eFt6J9YrP2b8zH5p3C-pn4EzfrROZnOwpDRejCbo-x8uDh5s5x4ok0fFd8eHXO1xZ7IBv1onuYhnOveQn4cHw7NvbqsYTnqU.hZsoX6RROuN5OX-9udhXMhLm2tmYr6AnGu5YOq1QULI&dib_tag=se&keywords=3d%2Bprinter%2Benclosure&qid=1772405341&sprefix=3d%2Bprinter%2Benclosu%2Caps%2C161&sr=8-4&th=1 The filter housing includes an optional fan inlet diffuser with a fan cable organizer feature. The housing snap-mounts onto a printer enclosure frame rod (which for my enclosure is 0.63in in diameter). This mounting feature can be redesigned in freely available CAD to fit your enclosure: https://cad.onshape.com/documents/1b58dd12f52ddbcdf88f5865/w/b5716d779371ba342f0a96a5/e/c842850d28bdf672c9be794e No print supports are needed for any of the parts, but although they fit on a 12x12in print plate, they do take about 15-20 hrs to print on a Prusa MK4S, longer on slower printers. I printed mine from PCTG to support potentially 90F printing environment in my enclosure, which could soften PLA. A few photos of the final product are included.