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Prime-Line Products U 10304 Prime Line U-10304 Standard Door Guard, 3-5/16 X 5/8 in W, Steel Chain/Solid Keeper, 3-5/16 X 5/8" W, Satin Nickel"

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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Sep 20
Order within 13 hours and 23 minutes
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Color Name: Satin Nickel


Features

  • SECURITY LOCKING DEVICE This U 10304 Chain Door Guard is a security locking device for doors, allowing a door to be slightly opened to allow safe viewing and ventilation.
  • CHILD-SAFE SECURITY DEVICE This door chain 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 - Installation is quick and easy additional security for your home or office doors are within reach! Installation fasteners are included.
  • DURABLE CONSTRUCTION This chain door guard is constructed of extruded brass with a satin nickel plated finish and a 6 inch, 8-link welded steel chain Its strong and durable and sure to last.
  • NOTE Please refer to the line art for dimensions and compare with your needs before ordering

Description

This U 10304 Chain Door Guard Lock is a security locking device for doors, allowing a door to be slightly opened to allow safe viewing and ventilation. This 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. Installation is quick and easy with fasteners included, providing added security for your home or office doors. This door guard is constructed of extruded brass with a classic bronze finish and a 6 inch, 8-link welded steel chain. The 3-5/16 inch chain guard can be used on a variety of door types and can be placed over or beside door casing. It features a 6 inch long, 8-link welded steel chain and all installation fasteners necessary for complete install. From the Manufacturer This chain door guard is constructed of extruded brass and comes in a satin nickel plated finish. It features a 6-inch long, 8-link welded steel chain and all installation fasteners necessary for complete install. When this chain door guard is fully assembled and engaged from base to keeper, the chain will extend to 4-5/8 inches. To determine the maximum distance it secures a door for safe viewing or ventilation, subtract the thickness of the door from 4-5/8 inches (approx. 3-inches). It can be used on a variety of door types and over, or beside door casing. The smaller chain-holder base measures 3/4 inches wide, and the wider chain lock keeper measures 3-5/16 long; both with a height of 2-inches. This chain door guard also works great as a child-safe security device which can help prevent little ones from fully opening doors and entering or exiting into dangerous areas. See model number U 10305 for classic bronze, U 9909 for satin chrome, S 4298 for chrome, U 9913 antique brass and U 9907 for brass.

Brand: PRIME-LINE


Special Feature: Steel Chain


Lock Type: Chain Door Lock


Item dimensions L x W x H: 3.31 x 0.63 x 2 inches


Material: Alloy Steel


Brand: ‎PRIME-LINE


Special Feature: ‎Steel Chain


Lock Type: ‎Chain Door Lock


Item dimensions L x W x H: ‎3.31 x 0.63 x 2 inches


Material: ‎Alloy Steel


Style: ‎chain


Color: ‎Satin Nickel


Number of Pieces: ‎1


Finish Type: ‎Satin Nickel


Included Components: ‎chain lock, keeper and fasteners


Controller Type: ‎Hand Control


Shape: ‎Chain


Control Method: ‎App


UPC: ‎049793103048


Model Name: ‎Chain Door Lock


Global Trade Identification Number: ‎48


Manufacturer: ‎Prime-Line Products (Home Improvement)


Part Number: ‎U 10304


Item Weight: ‎2.82 ounces


Product Dimensions: ‎3.31 x 0.63 x 2 inches


Item model number: ‎U 10304


Is Discontinued By Manufacturer: ‎No


Size: ‎1 Pack


Finish: ‎Satin Nickel


Item Package Quantity: ‎1


Special Features: ‎Steel Chain


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.


Date First Available: July 16, 2010


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Sep 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • door chain
Color Name: Satin Chrome
Door lock chain. My son can't open the door so easily anymore. The color is nice and everything is very resistant.
Reviewed in the United States on July 16, 2025 by Lili Ad Lili Ad

  • Works and looks good
Color Name: Satin Nickel
Easy as heck to install, nice and shiny
Reviewed in the United States on January 17, 2025 by jandchels

  • Easy to install for the peace of mind
Color Name: Satin Nickel
Very Easy to install, feels pretty secure when I am using it after installation. Cant beat the price for the extra line of security!
Reviewed in the United States on March 17, 2025 by Kelly Conklin

  • Good little chain lock - needs studier screws
Color Name: Classic Bronze
Works as promised. The only downside is that if you don't predrill your screw holes, you may end up bending the cheap lag screws they give you. Learn from the person that didn't.
Reviewed in the United States on May 3, 2024 by Adam Williams

  • Feel safe
Color Name: Classic Bronze
I added this to my apartment door recently. It is very strong and I feel much safer in my apartment when I open the door. It also keeps the maintenance men out
Reviewed in the United States on June 25, 2025 by Angel

  • door chain lock
Color Name: Satin Chrome
very sturdy offers the best protection, the chain is very thick.
Reviewed in the United States on May 31, 2025 by Chang Yu Dennis Lin

  • Old school lol
Color Name: Satin Nickel
This is as suspected. It's old school but works.
Reviewed in the United States on July 15, 2025 by Kelly Hammond

  • Good quality~ great price!
Color Name: Satin Nickel
Good quality at an excellent price! Arrived quickly too!
Reviewed in the United States on April 27, 2025 by E. Chase

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