@JimRosenthal4 @TheMemeticist I did all of mine with the pleats vertical because it seemed like it would have more structural support, but in hindsight I'm not sure how much support that filter media would provide regardless. Maybe it's all from the cardboard.
@JimRosenthal4 @TheMemeticist 我所有的褶皱都是垂直的，因为它看起来会有更多的结构支撑，但事后看来，我不确定过滤介质无论如何都能提供多少支撑。也许这一切都来自纸板。