---
product_id: 218036406
title: "CAL Doublex Classic – Window Lock for Protecting Sliding Doors, Patio Doors, sash Windows and Balcony Doors Against Break-ins (White)"
brand: "cal"
price: "NT$2376"
currency: TWD
in_stock: true
url: https://www.desertcart.tw/products/218036406-cal-doublex-classic-window-lock-for-protecting-sliding-doors-patio
store_origin: TW
region: Taiwan
---

# Child-proof lock 1000 lbs resistance Easy installation CAL Doublex Classic – Window Lock for Protecting Sliding Doors, Patio Doors, sash Windows and Balcony Doors Against Break-ins (White)

**Brand:** cal
**Price:** NT$2376
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock it down, live worry-free!

## Quick Answers

- **What is this?** CAL Doublex Classic – Window Lock for Protecting Sliding Doors, Patio Doors, sash Windows and Balcony Doors Against Break-ins (White) by cal
- **How much does it cost?** NT$2376 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/218036406-cal-doublex-classic-window-lock-for-protecting-sliding-doors-patio)

## Best For

- cal enthusiasts

## Why This Product

- Trusted cal brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleek & Discreet:** Flat design (10.5mm) ensures security without compromising aesthetics.
- • **Secure Your Space:** Protect your home with the best-selling locking system in the USA!
- • **Child Safety First:** Built-in child-proof lock prevents unintended openings.
- • **Certified Protection:** Tested by Hurricane Engineering & Testing Inc. for ultimate peace of mind.
- • **Effortless Installation:** Includes detailed, illustrated instructions for a hassle-free setup.

## Overview

The CAL Doublex Classic Window Lock is a top-rated security solution for sliding doors, patio doors, and sash windows. With a sleek design, easy installation, and certified resistance to forced entry, it ensures your home remains safe while providing child-proof features for added security.

## Description

CAL Doublex Classic – Window Lock for Protecting Sliding Doors, Patio Doors, sash Windows and Balcony Doors Against Break-ins (White)

## Features

- ✅ PRACTICAL – Quick, easy locking by pressing the steel bolt. Protect your home against break-ins with this practical locking system. THE NO 1 IN THE USA! For 20 years, the best-selling sliding door locking system in the States!
- ✅ EASY INSTALLATION – Detailed, illustrated step-by-step instructions are also included with the product.
- ✅ INNOVATIVE, DISCREET DESIGN – Inconspicuous locking thanks to the flat, narrow design (just 10.5mm). The quickest, most effective solution for securing your patio doors against being forced open.
- ✅ BUILT-IN CHILD-PROOF LOCK – The key function enables a pin to engage with the locking mechanism, therefore preventing the doors/windows being opened unintentionally.
- ✅ CERTIFIED SECURITY – From the institute ‘Hurricane Engineering & Testing Inc.’, USA. Passed the forcing open test with flying colours, resisting 1000 lbs. ATTENTION! Not suitable for lift-up sliding doors.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Cal |
| Product Dimensions | 28 x 9 x 2 cm; 242 Grams |
| Size | Classic |
| Colour | White |
| Style | Classic |
| Material | Alloy Steel |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 242 g |

## Images

![CAL Doublex Classic – Window Lock for Protecting Sliding Doors, Patio Doors, sash Windows and Balcony Doors Against Break-ins (White) - Image 1](https://m.media-amazon.com/images/I/61PtjriH9AL.jpg)
![CAL Doublex Classic – Window Lock for Protecting Sliding Doors, Patio Doors, sash Windows and Balcony Doors Against Break-ins (White) - Image 2](https://m.media-amazon.com/images/I/61WjkofFdrL.jpg)
![CAL Doublex Classic – Window Lock for Protecting Sliding Doors, Patio Doors, sash Windows and Balcony Doors Against Break-ins (White) - Image 3](https://m.media-amazon.com/images/I/311qHm+3-0L.jpg)
![CAL Doublex Classic – Window Lock for Protecting Sliding Doors, Patio Doors, sash Windows and Balcony Doors Against Break-ins (White) - Image 4](https://m.media-amazon.com/images/I/41bntHyC+0L.jpg)

## Available Options

This product comes in different **Colour Name, Size Name** options.

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**Shop now:** [https://www.desertcart.tw/products/218036406-cal-doublex-classic-window-lock-for-protecting-sliding-doors-patio](https://www.desertcart.tw/products/218036406-cal-doublex-classic-window-lock-for-protecting-sliding-doors-patio)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-30*