These are from surplus inventory from an office closing. They are new in box. I have about 20 of each. Located in Houston. Selling the 24x24s for $100 each and 24x12s for $100 for two (2 come in a box). Model numbers are below.
email charles0608ag at gmail
https://www.airfilterusa.com/24x24x12-blackbox-5-v-cell-hepa-99-999-plastic-frame-box-filter-gasket-air-exit-side.html
https://www.cis-supply.com/indoor-air-quality/air-filters/hepa-filters?page=1
email charles0608ag at gmail
https://www.airfilterusa.com/24x24x12-blackbox-5-v-cell-hepa-99-999-plastic-frame-box-filter-gasket-air-exit-side.html
https://www.cis-supply.com/indoor-air-quality/air-filters/hepa-filters?page=1