Grain Systems Tanks PNEG-4021 - Manual (Page 74)

8. Instructions
74 PNEG-4021 40 Series 18', 21' and 24' Diameter Bins
Assembly (Continued)
Figure 8B
Installation
8. If the roof sheet does not have a pre-punched hole for the roof vent, a hole must be cut. The cut hole
should match the roof vent. The hole’s inside edge should be approximately 15" from the eave.
(See Figure 8E on Page 75.)
9. Place the three (3) foam strips on roof sheet, as shown in Figure 8D on Page 75 . Position roof
vent over foam strips and bolt down using 5/16" x 3/4" bin bolts and nuts. NOTE: See Figure 8E on
Page 75 for lower two (2) bolts of vent.
Figure 8C
Ref # Part # Description
A Short Side Approximately 15-3/8"
B MIS-4404 Hold-Down Angle
C Long Side Approximately 15-7/8"