Box Fan Filter Tray

Made to fit over this box fan https://www.amazon.ca/dp/B08549KWFR?psc=1&ref=ppx_pop_dt_b_product_detailsa tight fit but wont fall off once you get it into place. I used a deburring tool to round the edges and that definitely helped slip it on.fits as 20"x20"x1" furnace filter, as well as had space behind the furnace filter for an activatedl carbon filter https://www.amazon.ca/dp/B0DS2WJ459?ref_=ppx_hzod_title_dt_b_fed_asin_title_0_0&th=1 I have one set up in my painting area as well as once in my woodworking area and both noticeably help with any paint or stain smells and dust control. If downloading the ST, cut the pairs of parts instead of splitting to objects. elegoo slicer seemed to work fine for me but bambu studio seperated the dovetail joints.