---
product_id: 3087128
title: "Double Bolt Lock for Sliding Glass Doors - Newly Patented - Advanced Technology to Keep Your Family Safe and Secure - High Security Lock - Virtually Burglar Proof (White)"
brand: "cal double-bolt lock"
price: "$115"
currency: NZD
in_stock: true
reviews_count: 10
category: "Cal Double Bolt Lock"
url: https://www.desertcart.nz/products/3087128-double-bolt-lock-for-sliding-glass-doors-newly-patented-advanced
store_origin: NZ
region: New Zealand
---

# 1000+ lbs forced entry resistance Child-safe height adjustable Easy, no-key installation Double Bolt Lock for Sliding Glass Doors - Newly Patented - Advanced Technology to Keep Your Family Safe and Secure - High Security Lock - Virtually Burglar Proof (White)

**Brand:** cal double-bolt lock
**Price:** $115
**Availability:** ✅ In Stock

## Summary

> 🔒 Lock in peace of mind, unlock your freedom.

## Quick Answers

- **What is this?** Double Bolt Lock for Sliding Glass Doors - Newly Patented - Advanced Technology to Keep Your Family Safe and Secure - High Security Lock - Virtually Burglar Proof (White) by cal double-bolt lock
- **How much does it cost?** $115 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/3087128-double-bolt-lock-for-sliding-glass-doors-newly-patented-advanced)

## Best For

- cal double-bolt lock enthusiasts

## Why This Product

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

## Key Features

- • **Child Safety First:** Mount at any height unreachable by kids to prevent accidental escapes.
- • **Double Locking Action:** Secures door at two points, eliminating any chance of sliding or lifting.
- • **Effortless Installation:** No batteries or keys needed—install quickly with included hardware and spacers.
- • **Sleek & Discreet Design:** Low-profile, powder-coated metal lock blends seamlessly with your sliding door frame.
- • **Unmatched Security Strength:** Withstands over 1000 lbs of forced entry tension—virtually burglar proof.

## Overview

The CAL Double Bolt Lock is a patented, high-security deadbolt designed specifically for sliding glass doors. Engineered to resist over 1000 lbs of forced entry tension, it features a double locking mechanism that secures the door at two points, making it virtually impossible to lift or slide open unauthorized. Its sleek, powder-coated metal design fits discreetly within narrow door frames, while adjustable mounting height ensures child safety by preventing young ones from opening doors unsupervised. Easy to install without batteries or keys, this lock is ideal for families, daycares, and anyone seeking robust protection and peace of mind.

## Description

With young children in the home, you know all too well how hard it is to keep an eye on them at all times. With the Cal Double Bolt child proof patio door lock installed, you can make sure that young ones do not become tempted to open the sliding glass doors on their own and expose themselves to potential danger. The Sliding Glass Door is one of the favorite "break out" spots for children. The closing mechanism is usually a latch, not a lock. This means that it is easier for children to operate than it is for adults to secure. Simply mount the Cal Double Bolt at a height that is unreachable by your children. Another advantage of the Cal Double Bolt sliding door lock is that it is clearly visible whether the lock is engaged or not, so it is more likely that parents will keep it in the locked position. The CAL Double Bolt Lock has a sleek, aesthetic, low profile design. As a result, the sliding glass door lock fits easily within the limited space available between the sliding glass door frame and the interior of the door panel. This amazingly simple device is EASY TO INSTALL and has been tested to provide over 1000 lbs of Forced Entry Load Tension. The Cal Double Bolt patio door lock prevents criminals from being able to lift out sliding glass doors from their tracks. Most factory installed locks or after-market products do not. Criminals know how easy it is to lift a door panel out of its track. Great for parents, grandparents, day care centers, and more. Premium quality metal materials No parts or keys to lose like other locksBlack Color

Review: Great lock, easy install! - Great deadbolt lock option for sliding glass door and extra peace of mind! Easy to install! We have a double slider so installed one on each side-installed the doorframe plate differently on each side based on the way the door sat in the frame and ability to still close or not with the lock in place-see pictures. Works great both ways!
Review: Some hiccups but would buy again if needed - After our sliding door’s plastic casing broke that held the door locked, we purchased this. I was really cautious when installing, measuring 20 times, pre-drilling holes, triple checking over and over again to make sure I didn’t hit the glass in the patio door. Overall, installed, and didn’t break the glass (like other reviews commented). The lock plate that’s on the interior part of the door, not the one attached to the sliding glass, was a little short, so we did use the spacer that came with it, still too short, so we added additional spacers to secure it better. We used spacers that you’d use on electrical outlets when you have tile, like backsplash tile in your kitchen. Worked amazing for that small issue and really secured it! Others commented that the lock bars come apart over time from the bottom/top plastic pieces (see red circles). They did after 6 months maybe. You’re able to push them back in by hand or using a pipe wrench worked best for us. After it continued to separate almost monthly, I used clear Gorilla glue in the holes and since then it hasn’t been an issue (6months ago). I know this sounds like a lot, but I’m still VERY happy with it and would still recommend it and buy again if ever needed. After all said and done, I’m SO GLAD we purchase this cause otherwise the only other option was a new door and to spend money replacing a door that was only 7 yrs old! I’d recommend it, I’m a security freak and feel like this lock is more secure than the lock that came with the patio door.

## Features

- CHILD SAFETY: Safeguard your children by preventing them from wandering outside the house. Install the CAL Double-Bolt Lock at the desired height to keep them safe from potential dangers.
- HIGH SECURITY: With a tested capacity to withstand over 1000 lbs. of Forced Entry Load Tension, the CAL Double-Bolt Lock prevents criminals from lifting out the sliding glass door from its tracks, providing robust security against forced entry.
- SLEEK DESIGN: The lock's aesthetic and low-profile design seamlessly fits within the limited space between the sliding glass door frame and the interior door panel. Its discreet appearance ensures it blends effortlessly with your frame and window environment.
- VERSATILE USAGE: Designed for the middle junction of most double sliding doors, the CAL Double-Bolt Lock works effectively to enhance security. For impact sliding glass doors and windows in northern regions, a larger latch might be required.
- DOUBLE LOCKING ACTION: The CAL Double-Bolt Lock secures the door to the frame at two points, rendering any movement of the door impossible. Its double locking action prevents unauthorized access and ensures your peace of mind.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0039ONKFQ |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #52,572 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #65 in Window Locks & Latches #286 in Deadbolts |
| Brand | CAL DOUBLE-BOLT LOCK |
| Color | White |
| Control Method | Touch |
| Controller Type | Hand Control |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,092) |
| Date First Available | April 24, 2012 |
| Finish | Powder Coated |
| Finish Type | Powder Coated |
| Included Components | CAL Double Bolt Lock + Cover, Latches, Lock Security Key, Screws, Spacers |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 8.8 ounces |
| Item dimensions L x W x H | 11 x 3.5 x 1 inches |
| Item model number | CAL-DBLOCK |
| Lock Type | Deadbolt |
| Manufacturer | CAL-TECH International, Inc |
| Material | Metal |
| Model Name | CAL Double Bolt Lock |
| Number of Pieces | 1 |
| Part Number | CDBL |
| Product Dimensions | 11 x 3.5 x 1 inches |
| Recommended Uses For Product | securing glass sliding doors, preventing burglary, ensuring child safety |
| Shape | Rectangular |
| Size | 2 Piece Set |
| Special Feature | Cut Resistant |
| Special Features | Cut Resistant |
| Style | Double Bolt Lock |
| UPC | 781264013165 852411002896 |
| Usage | Secure your patio or sliding glass door |

## Product Details

- **Brand:** CAL DOUBLE-BOLT LOCK
- **Item dimensions L x W x H:** 11 x 3.5 x 1 inches
- **Lock Type:** Deadbolt
- **Material:** Metal
- **Special Feature:** Cut Resistant

## Images

![Double Bolt Lock for Sliding Glass Doors - Newly Patented - Advanced Technology to Keep Your Family Safe and Secure - High Security Lock - Virtually Burglar Proof (White) - Image 1](https://m.media-amazon.com/images/I/51eU5v7WiNL.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great lock, easy install!
*by O***3 on February 5, 2026*

Great deadbolt lock option for sliding glass door and extra peace of mind! Easy to install! We have a double slider so installed one on each side-installed the doorframe plate differently on each side based on the way the door sat in the frame and ability to still close or not with the lock in place-see pictures. Works great both ways!

### ⭐⭐⭐⭐⭐ Some hiccups but would buy again if needed
*by M***D on January 28, 2026*

After our sliding door’s plastic casing broke that held the door locked, we purchased this. I was really cautious when installing, measuring 20 times, pre-drilling holes, triple checking over and over again to make sure I didn’t hit the glass in the patio door. Overall, installed, and didn’t break the glass (like other reviews commented). The lock plate that’s on the interior part of the door, not the one attached to the sliding glass, was a little short, so we did use the spacer that came with it, still too short, so we added additional spacers to secure it better. We used spacers that you’d use on electrical outlets when you have tile, like backsplash tile in your kitchen. Worked amazing for that small issue and really secured it! Others commented that the lock bars come apart over time from the bottom/top plastic pieces (see red circles). They did after 6 months maybe. You’re able to push them back in by hand or using a pipe wrench worked best for us. After it continued to separate almost monthly, I used clear Gorilla glue in the holes and since then it hasn’t been an issue (6months ago). I know this sounds like a lot, but I’m still VERY happy with it and would still recommend it and buy again if ever needed. After all said and done, I’m SO GLAD we purchase this cause otherwise the only other option was a new door and to spend money replacing a door that was only 7 yrs old! I’d recommend it, I’m a security freak and feel like this lock is more secure than the lock that came with the patio door.

### ⭐⭐⭐⭐⭐ Nice hardware to provide additional security to sliding door.
*by W***M on February 10, 2026*

Easy to install. Insure you check your are not drilling near the glass. Does the job to provide additional security.

## Frequently Bought Together

- Double Bolt Lock for Glass Sliding Doors - Advanced Technology to Keep Your Family Safe and Secure - High Security Lock - Virtually Burglar Proof
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**Shop now:** [https://www.desertcart.nz/products/3087128-double-bolt-lock-for-sliding-glass-doors-newly-patented-advanced](https://www.desertcart.nz/products/3087128-double-bolt-lock-for-sliding-glass-doors-newly-patented-advanced)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-08*