---
product_id: 14922455
title: "Prime-Line U 10309 Swing Bar Lock for Hinged Swing-In Doors – Secondary Security Lock for Door and Security, 3-7/8 In. Bar Length, Diecast Zinc Construction, Classic Bronze Finish (Single Pack)"
brand: "prime-line"
price: "R$197"
currency: BRL
in_stock: true
url: https://www.desertcart.com.br/products/14922455-prime-line-u-10309-swing-bar-lock-for-hinged-swing
store_origin: BR
region: Brazil
---

# 3.88-inch swing bar length Easy screw-in installation kit Durable zinc diecast with bronze finish Prime-Line U 10309 Swing Bar Lock for Hinged Swing-In Doors – Secondary Security Lock for Door and Security, 3-7/8 In. Bar Length, Diecast Zinc Construction, Classic Bronze Finish (Single Pack)

**Brand:** prime-line
**Price:** R$197
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in safety and style—because your door deserves the best.

## Quick Answers

- **What is this?** Prime-Line U 10309 Swing Bar Lock for Hinged Swing-In Doors – Secondary Security Lock for Door and Security, 3-7/8 In. Bar Length, Diecast Zinc Construction, Classic Bronze Finish (Single Pack) by prime-line
- **How much does it cost?** R$197 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/14922455-prime-line-u-10309-swing-bar-lock-for-hinged-swing)

## Best For

- prime-line enthusiasts

## Why This Product

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

## Key Features

- • **Child-Safe Peace of Mind:** Install out of reach to keep little ones safe while maintaining door security.
- • **Secure Your Space with Style:** Classic bronze finish blends security with elegance for the modern home or office.
- • **Ventilate Without Compromise:** Allows door to open slightly for safe viewing and airflow without sacrificing security.
- • **Built to Last, Built to Protect:** Robust zinc diecast construction ensures long-lasting durability and reliable defense.
- • **Effortless Setup, Instant Protection:** Complete installation kit included for a quick, hassle-free upgrade.

## Overview

The Prime-Line U 10309 Swing Bar Lock is a robust secondary security device designed for hinged swing-in doors. Featuring a 3.88-inch diecast zinc bar with a classic bronze finish, it allows safe ventilation while preventing unauthorized entry. Easy to install with included fasteners and spacers, it also offers child-safe security by being mountable out of reach. Durable and stylish, this lock is a must-have for professionals seeking reliable, elegant door security.

## Description

This Defender Security U 10309  Bar Door Lock is a security locking device for hinged swing-in doors, allowing a door to be slightly opened to allow safe viewing and ventilation. This door lock bar can also be installed out of reach of children so they cannot open the door by themselves, providing additional child-safe door security. Adding security bar locks for doors is quick and easy. All installation fasteners, including plastic shim spacers for leveling, are included. Strong, durable, and sure to last, these lock bars are constructed of zinc diecast with a classic bronze finish. This lock bar is 3-7/8 inch bar length by 2-1/2 inch height and has a long, hinged bar, which folds over the closed door to engage the catch. For further dimensional information, please see the line drawing.

## Features

- SECURITY LOCK – This swing bar lock is a security locking device for hinged swing-in doors, allowing a door to be slightly opened to allow safe viewing and ventilation
- CHILD-SAFE SECURITY DEVICE – This swing bar door lock can also be installed out of reach of children so they cannot open the door by themselves, providing additional child-safe door security
- EASY INSTALLATION - Adding a security swing latch to your door is quick and easy; all installation fasteners, including 2 plastic 1/8 shim spacers for offset door jambs
- STRONG AND DURABLE – Constructed of zinc diecast with a classic bronze finish, the security door lock is strong, durable, and sure to last
- DIMENSIONS - This locking bar is 3-7/8 inch bar length x 2-1/2 inch height and has a long, hinged bar, which folds over the closed door to engage the catch; for further dimensional information, please see the line drawing

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Weight | 7.36 ounces |
| Installation Type | Screw-In |
| Recommended Uses For Product | Securing hinged swing-in doors, providing child-safe door security, and using it as a door closer in commercial settings |
| Size | 1 Pack |
| UPC | 049793103093 |
| Global Trade Identification Number | 00049793103093 |
| Number of Pieces | 1 |
| Shape | T-Shaped |
| Manufacturer | Prime-Line Products (Home Improvement) |
| Part Number | U 10309 |
| Item Weight | 7.4 ounces |
| Product Dimensions | 3.88 x 0.88 x 2.5 inches |
| Item model number | U 10309 |
| Is Discontinued By Manufacturer | No |
| Style | Classic |
| Finish | Classic Bronze |
| Item Package Quantity | 1 |
| Handle Material | Bronze, Zinc |
| Included Components | Swing lock, keeper and fasteners |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Goods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse. |

## Product Details

- **Material:** Diecast
- **Brand:** PRIME-LINE
- **Color:** Classic Bronze
- **Exterior Finish:** Bronze
- **Product Dimensions:** 3.88"L x 3.88"W x 2.5"H

## Images

![Prime-Line U 10309 Swing Bar Lock for Hinged Swing-In Doors – Secondary Security Lock for Door and Security, 3-7/8 In. Bar Length, Diecast Zinc Construction, Classic Bronze Finish (Single Pack) - Image 1](https://m.media-amazon.com/images/I/51t76RcqobL.jpg)

## Available Options

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

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**Shop now:** [https://www.desertcart.com.br/products/14922455-prime-line-u-10309-swing-bar-lock-for-hinged-swing](https://www.desertcart.com.br/products/14922455-prime-line-u-10309-swing-bar-lock-for-hinged-swing)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-03-15*