3" × 3" × 8' Aluminum Gate / End Post for i-post system

3" × 3" × 8' Aluminum Gate / End Post for i-post system

Our 3" × 3" × 8' Aluminum Post is engineered specifically for gate posts and heavy-duty end/terminal posts, the points in your fence that experience the highest directional load, tension, and cantilever force. Built with a thick .125 wall aluminum, this post delivers exceptional strength without the rot, cracking, twisting, or long-term maintenance of wood.

These posts are designed to be installed traditionally: dig your hole, set the post in concrete, and create a rock-solid anchor strong enough to support gates and tensioned line runs. Each post also includes a 3" post cap for a clean, finished look.

Shipping for this item must be quoted separately. Please do not add this item to your cart, as shipping will not calculate correctly at checkout. Please call to place your order and receive a shipping quote.

Key Features

• Includes 3" post cap
• .125 wall thickness for maximum strength and load resistance
• Designed specifically for gate posts and heavy-load terminal/end posts
• Installed by digging and setting in concrete
• Will not rot, crack, warp, twist, or wick moisture
• Zero diameter variation — perfectly uniform posts
• Clean, modern profile — ideal for high-visibility entrances

Recommended Use Cases

• Gate posts for single or double gates
• Heavy-duty end / terminal posts
• Load-bearing points in the fence line
• Entryway posts for high-visibility access points

Note: These posts are designed to handle gate load and directional tension.
For line posts, use the 2" I-Post system.
For corners/end points not carrying a gate, the 2.5" × 2.5" × 8' post is ideal.

Why This Post Beats Traditional Alternatives

• Will not rot or degrade like pressure-treated wood
• Significantly stronger and straighter than wood, fiberglass, or T-posts
• Modern, clean appearance that complements premium fencing systems
• Superior long-term stability once set in concrete

This is the modern, high-strength solution for creating gate posts and heavy-load terminal post, engineered for equine fencing and built to stay straight, strong, and reliable for decades.