My air filter is here. Live unboxing shortly

[chris1]

@eflyguy

I’ll be curious to see where the supposed pre-filter is. I expected something you could easily swap out.

Um, yeah. About that pre-filter.

@dan

The new Glowforge Air Filter resembles the Compact Filter, but has three key differences: the cartridges last about 20% longer, it supports a prefilter that can extend the life of the cartridge by another 10%, and it has a notification sound when the HEPA filter is nearly full.

Reading that very carefully, I see the phrase “supports a prefilter”. Which of course most people would interpret to mean “includes a prefilter”. But all I see is a space where prefilter might, theoretically, go.