Chemical fixed, not mechanically fixed!
Thus avoiding metal to metal contact eliminating electrolysis, or rusting, which can occur when installed close to the ocean.
A very competitive system for Hinged and Sliding Doors to Australian Std 5039, 5040, 5041 - strong 316 stainless steel mesh with fixed and opening window screens to Australia standards 4039 and cyclone test no. AZT 0120.14.