Ikea Lack table ventilation kit

Inspired by the many air filtration systems, I wanted to design my own that incorporated easy-to-find respirator cartridges, an 80mm fan, and my Ikea Lack enclosure.

I used these [respirator cartridges](https://www.amazon.com/dp/B09XQT2PSS?psc=1&ref=ppx_yo2ov_dt_b_product_details), but any P-A-1 cartridge should work. The important part to me was that they were rated for vapors, not just particles.

The fan is a regular 80mm fan (25mm thick). I chose [this one](https://www.amazon.com/dp/B00NEMG9K6?psc=1&ref=ppx_yo2ov_dt_b_product_details), and it is VERY quiet.

Assembly was done by finding a suitable location on the table top, then tracing the MIDDLE piece, which is designed to fit inside the hole cut in the table. (The top and bottom are wider, so they sandwich the table in between.)

Then, you assemble the bottom, filter (thread side up), middle, and fan (exhaust towards top), and insert the assembly from the bottom. There's enough vertical play so that you can ensure every