Just tried to call them to get an outside air adapter. I was directed to 1.800.525.1898 which is the parent company CFM. Long story short, a recording informed me that the company is in receivership and that I could go to http://www.cfmcustomerservice.com
This link is broken, either the page no longer exists or there is some other issue like a typo.
for assistance. The site is of little use as most of the links are dead. I suppose I could go directly to VC and randomly key an extension and get through but I imagine the people there aren't feeling real freindly about now. It may be a good time to load up on grates and other consumables before they become impossible to find.