Prime-Line U9920 Anodized Aluminum Security Bar Lock 30-3/8x3-3/4x1 in 3/16-1/4 in T The Prime-Line U9920 anodized aluminum security bar lock is a telescoping patio door security solution designed to prevent forced entry through sliding glass doors in both residential and commercial settings. Measuring 30-3/8 inches in length when collapsed and extending to fit door openings from 28 to 48 inches wide, it requires no cutting or permanent modification. The clear anodized aluminum bar resists corrosion and wear while maintaining a low-profile, modern appearance. A built-in locking saddle secures the bar firmly in the bottom track, engaging the door frame to block lateral movement. Ideal for interior use, this lock enhances home or business security with tool-free installation and reliable, passive protection against intrusions. Features - Telescoping anodized aluminum bar adjusts from 28 to 48 inches wide - Fits standard inside and outside sliding patio doors without cutting - Clear anodized finish resists corrosion and blends with modern door frames - Includes bar assembly, locking saddle, and installation screws - Secures door by bracing against bottom track and frame for anti-lift protection - Compatible with door panel thicknesses of 1/8", 3/16", and 1/4" - Low-profile design (1-inch depth) minimizes tripping hazard and visual obstruction - Tool-free setup for immediate use in rental or owned properties - Suitable for both residential and light commercial indoor applications - Durable aluminum construction withstands daily use without bending Specifications - Brand Name: Prime-Line - Model Name: Prime-Line U9920 - Part Number: U9920 - Product Type: Sliding Door Lock - Material: Aluminum - Finish: Anodized Aluminum - Color: Aluminum - Length: 30-3/8 in (adjustable to 48 in) - Width: 3-3/4 in - Depth: 1 in - Door Thickness Compatibility: 1/8", 3/16", 1/4" - Bolt Hole Diameter: 3/16 in - Hardware Included: Yes - Indoor or Outdoor: Indoor - Commercial or Residential: Commercial and Residential - Each Weight: 0.8 lb - Country of Origin: China - UPC: 049793099204 - Manufacturer: Prime-Line Products Product Application The Prime-Line U9920 security bar is used by homeowners, property managers, and small business operators to reinforce sliding patio doors against unauthorized entry in apartments, condos, houses, and storefronts. It is typically installed in the bottom track of interior-facing sliding glass doors leading to patios, balconies, or yards, where it acts as a physical barrier that prevents the door from being slid open?even if the latch is compromised. The telescoping design accommodates a wide range of common door widths, making it ideal for quick deployment in rental units or temporary security upgrades. Its discreet profile and non-permanent installation preserve door aesthetics and function while delivering peace of mind through simple, mechanical deterrence. Perfect for ground-floor units, vacation homes, or any space where passive, always-on security is valued.