Wind resistance measures the deformation of a frame due to the pressure exerted by the wind.
Categories: (min) A1, A2, …, B2, …, C5, C Exxx (max)
A, B, C measure the deflection of the frame, while 1, 2, …, 5, Exxx, measure the category of pressure applied in the laboratory.
See the factors determining the performance of frames regarding wind resistance for details.
