Nylon-coated cables are widely used as invisible grill material because they provide an extra level of protection and safety. The nylon layer prevents the steel wires from rusting, reduces abrasion, and offers a smoother finish. This makes the grills child-safe and resistant to harsh weather conditions. Nylon coating also enhances strength by distributing tension evenly across the cables. Together, these features make nylon-coated invisible grills highly reliable for balconies, windows, and safety-focused home designs.