Originally Posted by jnsrose
Extremely crude picture I chopped together in Windows Paint.
Originally Posted by kamersoutdoor
Basically this, but with a ball valve for the center port.
Doug needs to make it!
Yes! That would be great!
Originally Posted by mark beiser
RSES CM Member
NCI Certified Air Balancer and CO/Combustion Analyst
NATE Senior technician - Energy efficiency analyst and 7 other NATE Service certifications
Never stop learning!