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Old 2019-06-20, 8:11pm
Alaska Alaska is offline
Alaska Boro
 
Join Date: Dec 10, 2009
Location: Anchorage, Alaska
Posts: 1,064
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Have been using a Soler & Palau T-250 Fan which fits 10 inch round duct in combination with a barley box. All installed in 2012 and is still performing well and without issues.

Folks are correct in that SP is a major factor in air flow. One must take into account, run length, number and type of elbows, etc to determine the overall CFM. And as pointed out, a window box fan is not an acceptable option for the lampworker.
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