Steel post kit includes 1 Steel post: 
 
You will require the following quantity depending on how many screens you order 
 
1 screen = 2 Posts 
2 Screens  = 3 Posts
3 screens = 4 Posts
4 Screens = 5 posts
 
The pattern continues - please select the quanity of posts required, NOT screens when you select this item.  
We will send the relevant amount of fixing screws to accompany your order.