Grain Systems Tanks PNEG-4021 - Manual (Page 77)

8. Instructions
PNEG-4021 40 Series 18', 21' and 24' Diameter Bins 77
Assembly (Continued)
Figure 8G
Installation
7. If the roof sheet does not have a pre-punched hole for the roof vent, a hole must be cut. Cut the hole
to match the roof vent. The inside edge of the hole should be approximately 15" from the eave.
(See Figure 8J on Page 78.)
8. Place the three (3) foam strips on roof sheet, as shown in Figure 8I on Page 78 . Position roof
vent over foam strips and bolt down using 5/16" x 3/4" bin bolts and nuts. NOTE: See Figure 8J on
Page 78 for lower two (2) bolts of vent.
Figure 8H
Ref # Part # Description
A Short Side Approximately 15-3/8"
B MIS-4404 Hold-Down Angle
C
Caulk with Tube Caulking
(Three (3) sides of vent housing.)
D Long Side Approximately 15-7/8"