Ah, I missed that on their site. I'll do that tomorrow, thanks.
That also wasn't a good first post, so I just want to say I've used my e-nano exclusively for almost 2 years now and love this thing. I've been using a 14mm glass filter adapter, but all my bongs are 18mm so I ordered a 18mm just to get rid of that extra piece of glass. I also requested a bigger bowl as that's really my only complaint. It'd be nice to get at least 2x the amount of hits from a pack, but I know that's possible with the e-nano. I guess I can always try one with a steel screen, but I really like the glass filters.