Zipper Flap Patent # 11,332,975 B1 #11,851,946 B2

How to determine screen mesh size. Count how many holes across within 1inch also count down 1 inch. These 2 numbers are your meshing size.

Standard Phifer 18/14 screen, allows for clear views. Stops most all insects except Noseeums. 18/14 means the amount of holes in 1 square inch along the edge. 18 in one direction 14 in the other

Phifer 20/20 screen, allows for a good views, comes with smaller holes, higher strength, even stops the tiniest of insects. Great for stopping pine needles from hanging through. 20/20 means the amount of holes in 1 square inch along the edge. 20 in one direction 20 in the other

Phifer 16/14 tuff screen is exactly that, Tuff. As you can see it still has a good view through the screen. This is one of our heaviest duty screens that we sell. 16/14 means the amount of hole in 1 square inch along the edge 16 holes in one direction 14 in the other.

Super Screen 17/14 is another one of our heavy duty screens that use. 17/14 means the amount of holes in 1 square inch along the edge 17 in one direction and 14 in the other.

Perfect 17/20 polyester screen is extra tough and allows for good views. Polyester screens are known for their toughness and long life. 17/20 means the amount of holes in 1 square inch along the edge 17 in one direction and 20 in the other.