---
product_id: 194952640
title: "Defender Security U 10313 Door Viewer, 1/2 inch x 180-Degree, Solid Brass Housing, Glass Lens is U.L. Listed, Classic Bronze Plated Finish"
brand: "prime-line"
price: "€ 50.61"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/194952640-defender-security-u-10313-door-viewer-1-2-inch-x
store_origin: SK
region: Slovakia
---

# 180° Viewing Solid Brass Easy Install Defender Security U 10313 Door Viewer, 1/2 inch x 180-Degree, Solid Brass Housing, Glass Lens is U.L. Listed, Classic Bronze Plated Finish

**Brand:** prime-line
**Price:** € 50.61
**Availability:** ✅ In Stock

## Summary

> 👀 See Who's There—Securely!

## Quick Answers

- **What is this?** Defender Security U 10313 Door Viewer, 1/2 inch x 180-Degree, Solid Brass Housing, Glass Lens is U.L. Listed, Classic Bronze Plated Finish by prime-line
- **How much does it cost?** € 50.61 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/194952640-defender-security-u-10313-door-viewer-1-2-inch-x)

## 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

- • **🔍 180° Viewing Angle:** Experience unparalleled visibility with a wide 180-degree lens, ensuring you never miss a visitor.
- • **🎨 Classic Bronze Finish:** Enhance your door's aesthetic with a timeless classic bronze plated finish that complements any decor.
- • **🌍 International Standards:** U.L. listed for safety and reliability, ensuring peace of mind for your home security.
- • **🔒 Solid Brass Construction:** Crafted from durable solid brass, this door viewer combines elegance with security.
- • **🛠️ Hassle-Free Installation:** Install in minutes with just a few simple tools—no professional help needed!

## Overview

The Defender Security U 10313 Door Viewer is a premium security accessory designed for doors 1-3/8 in. to 2-1/8 in. thick. With a 180-degree viewing angle and solid brass housing, it combines functionality with style. Easy to install and U.L. listed, this door viewer is the perfect addition to enhance your home security.

## Description

Defender Security U 10313 Door Viewer, 1/2 inch x 180-Degree, Solid Brass Housing, Glass Lens is U.L. Listed, Classic Bronze Plated Finish

## Features

- These door viewers are designed to add an additional security measure to your home, allowing for safer visitor checks
- The lens in this viewer provides a 180 degree viewing area
- With only a few simple tools, this door viewer is easy to install.Used on doors 1-3/8 in. to 2-1/8 in. thick
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Prime-Line Products (Home Improvement) |
| Part Number | U 10313 |
| Product Dimensions | 2.86 x 9.69 x 13.81 cm; 0.28 g |
| Item model number | U 10313 |
| Size | 180 degree |
| Colour | Classic Bronze |
| Finish | Classic Bronze |
| Material | Brass |
| Item Package Quantity | 1 |
| Included Components | Door viewer |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 0.28 g |

## Images

![Defender Security U 10313 Door Viewer, 1/2 inch x 180-Degree, Solid Brass Housing, Glass Lens is U.L. Listed, Classic Bronze Plated Finish - Image 1](https://m.media-amazon.com/images/I/512N4Uug41L.jpg)
![Defender Security U 10313 Door Viewer, 1/2 inch x 180-Degree, Solid Brass Housing, Glass Lens is U.L. Listed, Classic Bronze Plated Finish - Image 2](https://m.media-amazon.com/images/I/619xS6zEYfL.jpg)
![Defender Security U 10313 Door Viewer, 1/2 inch x 180-Degree, Solid Brass Housing, Glass Lens is U.L. Listed, Classic Bronze Plated Finish - Image 3](https://m.media-amazon.com/images/I/51j2cRIxdoL.jpg)
![Defender Security U 10313 Door Viewer, 1/2 inch x 180-Degree, Solid Brass Housing, Glass Lens is U.L. Listed, Classic Bronze Plated Finish - Image 4](https://m.media-amazon.com/images/I/61uCnwS8SjL.jpg)
![Defender Security U 10313 Door Viewer, 1/2 inch x 180-Degree, Solid Brass Housing, Glass Lens is U.L. Listed, Classic Bronze Plated Finish - Image 5](https://m.media-amazon.com/images/I/71C+ij7jqjL.jpg)

## Questions & Answers

**Q: Can you see inside your house if you are looking in from the outside? Just want to make sure this is a one way viewer.**
A: It is a one way viewer. A person peeking from the outside will not get any view from the inside.

**Q: will this viewer fit a door that is 3.75 in. thick?  Dimension listed is much greater than door thickness.**
A: The dimensions given are the actual packaging the item is shipped in. The viewer will fit a door 1 3/8" to 2 1/8" thick.

**Q: How is 220 degree view angle possible?     A right angle is 90 degrees.    180 degree is straight.    220 degree view means able to see behind you.**
A: The viewer is 180-Degree View Angle. The way to achieve 220 degree are done with prism lens.

**Q: I have a fiberglass type door. Will this work on my door?**
A: Yes, the viewer an work on a fiberglass door.

## Frequently Bought Together

- Prime-Line U 10313 Door Viewer, 9/16 In. x 180 Degree, Solid Brass Housing, Glass Lens is U.L. Listed, Classic Bronze Plated Finish (Single Pack)
- Prime-Line MP9493 Texas Security Bolt, 3 In., Stamped Steel, Painted White, Fits Swing-In Doors (Single Pack)
- Prime-Line S 4185 9/16 In. 180 Degree Chrome Door Viewer (Single Pack)

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**Shop now:** [https://www.desertcart.sk/products/194952640-defender-security-u-10313-door-viewer-1-2-inch-x](https://www.desertcart.sk/products/194952640-defender-security-u-10313-door-viewer-1-2-inch-x)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-10*