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🛡️ Lock in peace of mind with style and strength!
The Defender Security U 10304 Chain Door Guard is a robust door locking device featuring a 6-inch, 8-link welded steel chain and solid extruded brass construction with a satin nickel finish. Designed for enhanced home and office security, it allows safe door ventilation and viewing while preventing unauthorized entry. Child-safe installation options and included fasteners make it a versatile, durable, and easy-to-install security solution compatible with multiple door types.



























| ASIN | B003VWPKQ8 |
| Best Sellers Rank | #77,717 in Baby Products ( See Top 100 in Baby Products ) #717 in Door & Window Guards |
| Brand | Prime-Line |
| Brand Name | Prime-Line |
| Colour | satin nickel |
| Country of Publication | USA |
| Customer Reviews | 4.5 out of 5 stars 2,418 Reviews |
| Finish Type | Satin Nickel |
| Global Trade Identification Number | 00049793103048 |
| Included Components | chain lock, keeper and fasteners |
| Item Type Name | Chain lock |
| Manufacturer | Prime-Line Products (Home Improvement) |
| Manufacturer Part Number | U 10304 |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model Number | U 10304 |
| Number of Pieces | 1 |
| Product Finish Type | Satin Nickel |
| Product Style | chain |
| Style | chain |
| UPC | 049793103048 |
| Unit Count | 1.0 Count |
C**N
Cerradura resistente
Buena calidad y resistencia del material de la cadena.
D**S
Parafusos não vieram no tamanho certo.
Os parafusos são maiores do que os buracos , tive que comprar parafusos novos
A**R
Good product
This is great if you have small kids who love to run outside without permission. We mounted them up high so the kids could not open the door (much). This far has held up well.
A**N
Does the job lol
I purchased this item as an additional barrier of door protection as well as preventing my younger child from unlocking the doors and going outside. Works well, does the job I needed it to do and install was simple. Price point for 2 units is also affordable and efficient. Good 2 go.
T**L
Strong and easy to use
This lock is highly durable and very simple to install. Highly recommend!
Trustpilot
1 week ago
3 weeks ago