| Item Number | Post Size |
| CI805 | 1" x 1" |
| CI804 | 1-1/4" x 1-1/4" |
| CI806 | 1-1/2" x 1-1/2" |
| CI807 | 2" x 2" |
| CI8212 | 2-1/2" x 2-1/2" |
| CI808 | 3" x 3" |
| CI809 | 4" x 4" |
| CI810 | 5" x 5" |
| CI811 | 6" x 6" |
Actual dimensions may vary slightly due to variations in manufacturer's production.