> How long does it take the filters to load This is basically the same question as "how long does a filter cube last". See https://www.texairfilters.com/testi

> How long does it take the filters to load This is basically the same question as "how long does a filter cube last". See https://www.texairfilters.com/testing-the-efficiency-of-merv-13-corsi-rosenthal-boxes-in-use/ https://www.texairfilters.com/testing-the-efficiency-of-merv... where they found performance was still good at 6m, though decreasing at 10m.