This 2-pack sliding door security bar is constructed from 1-inch high-strength steel with a rustproof finish, delivering up to 300 lbs of anti-force protection for enhanced home security. Featuring an 18-50 inch adjustable length, it fits most sliding patio doors and windows perfectly. Non-slip rubber tips prevent scratches and ensure a firm grip, while the tool-free, damage-free installation makes it ideal for renters. Lightweight and portable for travel use, it effectively safeguards your home, apartment, hotel room, patio and dorm, protecting children, pets and solo residents at all times.