Betsy -0 wrote:

How quiet are those window fans?

Grainger high med low speed

4TM66 $73 65 52 49 dB
5850 4400 3240 cfm
90 76 61 watts
65 58 53 cfm/W

3C614 $183 64 59 50 dB
8900 7627 5545 cfm
170 145 115 watts
52 53 48 cfm/W

You might buy 2 of the cheaper ones.

Nick