Minimum Steel I-Beam Post Sizes for Impasse Fence Panels & Gates

Fence Posts

Panel Height

4” x 1.75” x 0.100” I-beam

Up to & Including 10’ Height

Gate Leaf Width

Gate Height

Up to & Including 6’

Over 6’ Up to & Including 8’

Over 8’ Up to & Including 10’

Over 12’

Up to 4’

3” x 12Ga.

3” x 12 Ga.

4” x 11 Ga.

4” x 11 Ga.

4’1” to 6’

3” x 12Ga.

3” x 12 Ga.

4” x 11 Ga.

4” x 11 Ga.

6’1” to 8’

4” x 11 Ga.

6” x 3/16” wall

6” x 3/16” wall

6” x 3/16” wall

8’1” to 10’

4” x 11 Ga.

6” x 3/16” wall

6” x 3/16” wall

6” x 3/16” wall

10’1” to 12’

6” x 3/16” wall

6” x 3/16” wall

6” x 3/16” wall

8” x 1/4" wall

12’1” to 16’

6” x 3/16” wall

6” x 3/16” wall

8” x 1/4” wall

8” x 1/4" wall