Fiberglass Tube Marking Guide

Slots to mark lines for three or four fins

Slot to mark rail button lines for three or four fins

3/32", 1/8", 3/16" holes for marking/drilling vent holes

Inner diameters are as follows:

2.2"FG - 56.642mm

3"FG - 79.3mm

4"FG - 102mm

5"FG - 130.6mm

5.5"FG - 140.34mm

6"FG - 156.72mm

8"FG - 203.88mm

*FG is standard fiberglass tubing*