Adjustable Window Security Lock & Door Latch – Zinc Alloy

Adjustable Window Security Lock – Strong, Simple & Reliable

Keep your home, office, or rental safe with this heavy-duty adjustable window security lock and door latch. Crafted from robust zinc alloy, this compact yet powerful stopper fits most sliding and casement windows, giving you an extra layer of protection against unwanted entry. The eye-catching yellow triangle indicator makes it instantly visible, so you always know your windows are properly secured at a glance.

Whether you're a homeowner, renter, or parent looking to childproof your living space, this versatile latch delivers a customized fit thanks to its fully adjustable design — no drilling or complicated installation required.

Made in Mainland China.

Key Features

• Adjustable & Versatile: Fits a wide range of window and door frames; easily customized to your exact frame width.
• Zinc Alloy Construction: Durable, rust-resistant material built to withstand daily use and long-term wear.
• Anti-Theft Design: Acts as a strong deterrent against forced entry, adding a reliable security layer to your windows.
• Visible Yellow Triangle Indicator: Easy-to-spot design lets you confirm your windows are locked from across the room.
• No Tools Needed: Simple tool-free installation — just clamp onto the window frame and you're done.
• Multi-Use: Suitable for sliding windows, casement windows, and compatible door frames at home, in dormitories, or in offices.
• Compact & Lightweight: Unobtrusive profile that doesn't interfere with the look or function of your windows.

Specifications

• Material: Zinc Alloy
• Design Feature: Yellow triangle visibility indicator
• Adjustability: Yes – customizable fit
• High-Concern Chemicals: None
• Origin: Mainland China

Notes

• Please allow 1–3 mm differences due to manual measurement.
• Colors may vary slightly between monitors and actual product.

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Frequently Asked Questions

Q: What types of windows is this adjustable window security lock compatible with?

A: This adjustable window security lock is designed to fit most standard sliding and casement windows, as well as compatible door frames. Its adjustable design means it can be tailored to a wide range of frame widths without any drilling or special tools.

Q: Is the window latch easy to install?

A: Yes! Installation is completely tool-free. Simply clamp the zinc alloy latch onto your window frame, adjust it to the desired width, and it's ready to use. Most users have it set up in under a minute.

Q: What does the yellow triangle indicator do?

A: The yellow triangle is a highly visible indicator that lets you quickly confirm whether your window is locked or unlocked — even from a distance. This is especially useful for home safety checks and childproofing.

Q: Is this window lock durable enough for long-term use?

A: Absolutely. The lock is made from robust zinc alloy, which is known for its strength, durability, and resistance to rust and corrosion, making it a reliable long-term security solution for your home or office.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.