Step 7:Main Trunk (Table 2A) and Branch Duct (Table 2B) Sizes
Zone 1
Main Duct (sq. in.):____________________ = Main Duct Size:____________
Branch (sq. in.):_______________________
Size:__ Qty:___ Area (from Table 2B) =________________+
Size:__ Qty:___ Area (from Table 2B) =________________+
=________________ Total Sq. In.
Zone 2
Main Duct (sq. in.):____________________ = Main Duct Size:____________
Branch (sq. in.):_______________________
Size:__ Qty:___ Area (from Table 2B) =_________________+
Size:__ Qty:___ Area (from Table 2B) =_________________+
=_________________ Total Sq. In.
Zone 3
Main Duct (sq. in.):____________________ = Main Duct Size:____________
Branch (sq. in.):_______________________
Size:__ Qty:___ Area (from Table 2B) =________________+
Size:__ Qty:___ Area (from Table 2B) =________________+
=________________ Total Sq. In.
Zone 4
Main Duct (sq. in.):____________________ = Main Duct Size:____________
Branch (sq. in.):_______________________
Size:__ Qty:___ Area (from Table 2B) =________________+
Size:__ Qty:___ Area (from Table 2B) =________________+
=________________ Total Sq. In.
Zone 5
Main Duct (sq. in.):____________________ = Main Duct Size:____________
Branch (sq. in.):_______________________
Size:__ Qty:___ Area (from Table 2B) =________________+
Size:__ Qty:___ Area (from Table 2B) =________________+
=________________ Total Sq. In.
Zone 6
Main Duct (sq. in.):____________________ = Main Duct Size:____________
Branch (sq. in.):_______________________
Size:__ Qty:___ Area (from Table 2B) =________________+
Size:__ Qty:___ Area (from Table 2B) =________________+
=________________ Total Sq. In.
Zone 7
Main Duct (sq. in.):____________________ = Main Duct Size:____________
Branch (sq. in.):_______________________
Size:__ Qty:___ Area (from Table 2B) =________________+
Size:__ Qty:___ Area (from Table 2B) =________________+
=________________ Total Sq. In.
Zone 8
Main Duct (sq. in.):____________________ = Main Duct Size:___________
Branch (sq. in.):_______________________
Size:__ Qty:___ Area (from Table 2B) =________________+
Size:__ Qty:___ Area (from Table 2B) =________________+
=________________ Total Sq. In.
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