Looking through Security Fence pictures will help you choose the best fencing options for your project.
Here's green mesh security fencing.
Here's an aluminum security fence with rows of razor wire at the top.
This type of high security fence is usually used at prisons or airports.
Here's a green metal security fence.
Here's a wrought iron security fence with curved posts.
This security fence is chain link with barbed wite on the top.
Here's an aluminum security fence with narrow aluminum poles.