Grain Systems PNEG-1853 - Manual (Page 19)

4. 12' Outside Catwalk Installation Instructions
PNEG-1853 12' Tower Dryer Fan Style Catwalk Assembly 19
Installing Knee Support (GT1-2039-BS)
1. Install the knee support (GT1-2039-BS) around the dryer between the catwalk support clips
(GT1-2040-BS) and planks (GT1-2033) using 3/8"-16 x 1" YDP grade 8 or grade 8.2 bolts (S-7927)
and 3/8"-16 ZN grade 5 nuts (S-968).
(See Figure 4P and Figure 4Q.)
Figure 4P
Figure 4Q