Besides trees and wood posts metal angle-iron posts make perfectly good deer fencing supports for both polypropylene and metal hexagrid fencing. The nine-footers we offer (item 15-01 below) have black, 11-gauge 1.25-inch flanges at 90 degrees to one another, with holes located along one flange at 2-inch intervals. They do need periodic inspection for rust and touching up with rust-preventive paint (items 15-08 and 15-081). These posts are made of high-carbon rail steel and are able to absorb an impact of 50,000 pounds per square inch without breaking, so they provide more strength per unit of weight than the average steel posts used for fences. For instructions on how far apart to space these posts and how to set them in, see Deer Fence Installation: Selecting and Installing Deer Fence Supports: Metal Deer Fence Posts
Besides these posts, we also sell 4-foot angle-iron post extenders (item 15-02K) that can be used to make a fence taller. Each of these sturdy extenders is identical in horizontal cross-section to our 9-foot angle-iron posts, and each comes with 2 nuts, bolts, and washers for attaching it to a 9-footer. By adding this extender, your angle-iron posts can go 3 or more feet into the ground and still stand plenty tall enough to support the full height of 8-foot deer fencing. It is not recommended that polypropylene or hexagrid deer fencing be attached above the fence’s normal height. Rather, 11-gauge nylon monofilaments (see Deer Fence Installation: Monofilament Lines for Plastic Deer Fence) should be strung through the angle-iron holes at 4-inch to 6-inch intervals in order to extend the fence’s effective height. This excellent system is the same used with metal hex fencing to extend the fence's working height from 5 feet 6 inches to 7 feet.
A manual post driver (item 15-05) is convenient for driving angle-iron posts into the ground, though one must take special care to keep assisting hands that are steadying the post out of range of the descending driver. Corner and end braces (items 15-06 and 15-07) use round posts, so they look best with round post fences, but they can be used perfectly well as a part of fences using other kinds of posts.
