Installation Instructions
Follow the guidelines for proper duct sizing in the ducting charts.
DUCTING CHART:
Flow vs. equivalent feet of duct length
CFM
300
250JV347
200JV338
150
100
50
0 | 20 | 40 | 60 | 80 | 100 |
0 |
Equivalent Feet of Duct Length
MAXIMUM DUCT LENGTH: For satisfactory air movement, the total duct length of a 31⁄4″ x 10″ rectangular,
6″ or 7″ diameter round duct should not exceed 65 equivalent feet.
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