anyone out there coming across these? Saw it at the home show, looks great in theory.
James
???
What are these
Larry
Just recommended one for a client who had a lake in the crawl.
Might work well for areas of the US where venting of the crawl space isn’t required (mostly southern states … see the IRC for that).
JMO & 2-nickels … 
There’s also these three files from About Homes:
Good Information Ray;
Thanks
Marcel 