Split rails are commonly sold in 10 or 11 ft lengths, which sets the post spacing.
How panels are counted
Panels = run length ÷ panel width, rounded up. Posts = panels + 1 on each straight run. A round pen needs circumference ÷ panel length.
Example: 100 ft with 10 ft sections takes 10 panels and 11 posts.
Panels and posts at a glance
Worked out with the same settings as the calculator above, changing only the length.
| Length | Panels | Posts |
|---|---|---|
| 50 ft | 5 | 6 |
| 100 ft | 10 | 11 |
| 150 ft | 15 | 16 |
| 200 ft | 20 | 21 |
| 300 ft | 30 | 31 |
Common questions
How many posts for fence panels?
One more than the number of panels on each straight run, plus extra posts at each gate.
What if the last panel does not fit?
Cut the last panel on each run to fit, or adjust post positions so the cut panel sits somewhere less visible.