Crafted from strong aluminum, the modest integrates discreetly with door tracks while its weather resistant construction ensures Stable in indoor / outdoor environment This Multifunction door Defender screw mounted stability or Not drill adhesive installation, adapting seamlessly to wood, aluminum, and PVC frame while preserving door / window integrity Ideal for awake parent and pet owners, this foot operated prevents accidental openings by curious children while maintaining easy adult access through controlled operate enhances your home security with this upgraded Patioes Sliding Door Security Foot featuring Double keyed locking mechanism and childproof design, providing impenetrable Defense for both top and bottom rails of sliding glass door firmly protect Patioes entries, balconies accesses, and horizontal sliding window in residential homes, apartments, or child care facilities with this Multiple functional security solution