Using the included Desiccant holders is not good for loose Desiccant, many fall through the holes in it. I made this to hold the loose desiccant you can buy (I use Activated Alumina). I'm sure this can be improved, but it works great as is. I have holes in the cover and base to use RC linkage rods to hold the cover in place. I cut them to size and bend one end. https://www.amazon.com/dp/B086C4Q5RS?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_13