In the last page of the PDF document for Energy Conservation in Housing (page 161 pdf page, or 153 as I numbered them), I discuss the fan type dilemma, and what I used when I needed to replace a fan. I obtained a Tjernlund duct booster, but had to modify the fan wheel so it could handle the air flow. 120 Volt AC fan.
In the above messages, AC Hacker was able to make a link to my multiply site. (click his link “the actual link” on his message.) On that Multiply site, there is a links option, “Links about insulation data” The third link has my google groups site, and the PDF copies can be accessed on the bottom half of the web page.
Dave Meinert
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