Qidi Plus 4 Hepa Filter, flush fit with refillable carbon.

a remix for folks with fitment issues is here: https://www.printables.com/model/1184276-qidi-plus-4-carbon-filter-hepa-filter

We've been doing this all wrong! the carbon filter should go first as a prefilter, it will actually help the Hepa filter to last longer.

So I used Spooks version since it has a refillable door for the carbon pellets to add a slot on the BOTTOM for the Hepa filter.

Print the same as Spook's but add support to where the larger door used to be and is now a wall.

Here is the Hepa filter to use for this model.

https://www.amazon.com/dp/B075L64BM7?_encoding=UTF8&ref=cm_sw_r_cp_ud_dp_5DRB2P0T01KTBJKYDSJ6&ref_=cm_sw_r_cp_ud_dp_5DRB2P0T01KTBJKYDSJ6&social_share=cm_sw_r_cp_ud_dp_5DRB2P0T01KTBJKYDSJ6&skipTwisterOG=1&th=1

Just added a slot on the bottom for a Hepa filter to slide in.

Also check for fitment, there is a good remix that works better for some folks. https://www.printables.com/model/1184276-qidi-plus-4-carbon-filter-hepa-filter