Grain Systems PNEG-1089 - Manual (Page 7)

PNEG-1089 Top Dry Duct Installation 7
3. 44" Duct Section
Figure 3A
Fasten all four (4) panels with
5/16"-18 x 3/4" flange bolt (S-6606)
5/16"-18 flange nut (S-3611)
after caulking.
Fasten duct mount brackets
TD-101096 and TD-101097 to
duct assembly.
Fasten stiffener mount brackets to
duct mount brackets with
3/8" x 1" flange bolts (S-7927)
3/8"-16 flange nuts (S-968).