HEPA filter for "aer" filters

thingiverse

Compact Housing for HEPA "aer" Filters Using a 60mm Fan That Seals Tightly and Works Well in Real-World Testing. The back of this housing is flat with three M5 holes, allowing it to be securely fastened directly to an enclosure wall. To assemble the housing, print five parts with their joining edges facing upwards on your bed. This will ensure a smooth and true surface when trying to bond them together. I successfully printed the housing in ABS and joined it using acetone. However, I advise against using PETG as it lacks sufficient bonding strength. When selecting materials, choose ones that can be easily bonded together. Use a fan with decent static pressure ratings to effectively pull air through the housing, but not so high that it creates drafts in your enclosure. The Noctua 60mm fan proved to be an excellent choice, providing a good balance between airflow and pressure: https://www.amazon.com/gp/product/B009NQMESS/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1 Background: I was initially skeptical about the Roomba "hepa" filters on Amazon, suspecting they might not be genuine HEPA. The "aer" filters, although expensive, are compact and sold by a first-party vendor, represented as HEPA, and appear to be genuine HEPA filters. Remember, if your filter is not actually HEPA, you risk exposing yourself to hazardous ultrafine particles (UFPs).