The mesh size on aluminum patches is 18 x 14 .011. That means there are 18 threads across and 14 down in 1 sq in. Please feel free to contact our customer service department if you have any other questions. 1-800-762-6694.
I use it for up to about 1/2 inch diameter holes/tears to allow for plenty of undamaged screen material to bind with and act to reinforce the entire area.
how do you install screen patch