If it helps ,what we are talking about is the negative pressure in the burn box of the pellet stove. The combustion fan sucks the air out creating a slight vacuum (lower pressure then the air outside). The negative pressure is measured to determine if the air flow meets the specifications of the stove.
negative pressure in combustion chamber versus the negative pressure at the vac switch......vac switch neg pressure is actually a lot more helpful
We'll said Sub, that's why I like Busch at $16 / 30pack it works for me I like Sam Adams, Harp and other designer Beers ,but at $25 to $30 for 24 I'd need a 2nd job to support my daily consumption rate