Adjustable Sliding Door Security Bar 17.5–50", Heavy Duty, Black

Sliding Door Security Bar – Adjustable 17.5"-50" Heavy Duty Patio Door & Window Security Lock, Black Metal, Anti-Theft Safety Bar for Sliding Glass Doors, Home & Apartment Use

🔒 Heavy-Duty Protection – Made of 1" diameter black-painted steel , withstands up to 400 lbs of force, offering stronger protection than standard 3/5" bars.

📏 Fully Adjustable Length – Extends 17.5" to 50" to fit sliding glass doors, patio doors, or windows of various sizes.

⚡ Quick Install & Removal – Tool-free setup in 3 steps; spring button and double-nut tension system allow fast adjustment or emergency removal.

🏠 Multi-Purpose Use – Ideal for home, apartment, balcony, or patio security. Also functions as a pet door blocker to keep dogs and cats safe indoors.