Roomba Filter for AirManagerV2

Buy the filter here on Amazon or any other place that sells Roomba accessories. https://www.amazon.com/gp/product/B00K7DMEJ0/ref=ox_sc_saved_image_2?smid=A2PVM5SNBKAIHK&psc=1 You don't need to take the tab off as it should slot into the splot I made for it. Also, be sure that the part of the adaptor with no lip faces the outside. Also, the carbon prefilter that I plan on using is from this link. https://www.amazon.com/gp/product/B072KGWVJ6/ref=crt_ewc_title_srh_1?ie=UTF8&psc=1&smid=A39G1UAOFK1OOE