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Defender Security U 10304 Chain Door Guard – Door Chain Lock for Door and Home Security, 3-5/16 In., Solid Brass Construction with a Satin Nickel Finish (Single Pack)

4.5 4.5 out of 5 stars 3,783 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
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Satin Nickel

Purchase options and add-ons

Brand PRIME-LINE
Special Feature Steel Chain
Lock Type Chain Door Lock
Item Dimensions LxWxH 3.31 x 0.63 x 2 inches
Material Steel

About this item

  • 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 It’s strong and durable and sure to last.
  • PRODUCT INFO – The 3-5/16 inch U 10304 Chain Door 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.
  • NOTE – Please refer to the line art for dimensions and compare with your needs before ordering
See more product details

Customer ratings by feature

Easy to install
4.4 4.4
Sturdiness
3.8 3.8
Value for money
3.7 3.7

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$13.36
Get it as soon as Sunday, Mar 31
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Defender Security U 10304 Chain Door Guard – Door Chain Lock for Door and Home Security, 3-5/16 In., Solid Brass Construction with a Satin Nickel Finish (Single Pack)
PRIME-LINE Defender Security U 10304 Chain Door Guard – Door Chain Lock for Door and Home Security, 3-5/16 In., Solid Brass Construction with a Satin Nickel Finish (Single Pack)
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Price$13.36$7.99$7.60$14.99$14.99$9.99
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Customer Ratings
Easy to install
4.4
4.5
4.6
4.5
4.5
4.5
Sturdiness
3.8
3.9
4.0
4.1
4.1
4.5
Value for money
3.7
4.1
4.1
4.2
4.2
4.5
Easy to use
4.3
4.8
4.5
4.5
4.4
Sold By
Amazon.com
INBOF Direct
JQK Products
Jack N'Drill
Jack N'Drill
Amazon.com
lock type
Chain Door Lock
Chain Door Lock
Combination Lock
number of items
1
2
2
2
1
material
Steel
Stainless Steel
Alloy Steel, Brass
Alloy Steel, Brass
Diecast
finish type
Satin Nickel
Brushed
Black
Polished
Polished
Satin Nickel

From the brand


From the manufacturer

Category Module_Security
U 10304

Dimensional Line Drawing

primeline logo building
Why Prime-Line?

Founded in 1978, Prime-Line’s mission is to empower national distributors, commercial companies, and individual homeowners with high-quality repair solutions.

  • Repair & Replacement Parts
  • Safety & Security Products
  • For Your Home
  • For Your Business

U-10304 - Defender Security Chain Door Guard Lock

Satin Nickel Finish

This chain door guard is constructed of extruded brass and comes in a satin nickel plated finish. It features a 6 in. 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 in. To determine the maximum distance it secures a door for safe viewing or ventilation, subtract the thickness of the door from 4-5/8 in.

  • Used as a security locking device for safe viewing and ventilation
  • Allows 4 in. of viewing or ventilation while keeping the room secure
  • Can be used as a child safety device
  • Solid brass keepers and steel chain with satin nickel finish
  • Easy to install on door and jamb
  • Mounting hardware included, A Phillips head screwdriver is required for installation

FEATURES & BENEFITS

U 10304 image 1

U 10304 image 2

U 10304 image 3

U 10304 image 4

Adds additional security to your home

Constructed from extruded aluminum with a satin finish

Allows 2 inches of viewing or ventilation while secured

Out of reach of children for added safety

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

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Defender Security U 10304 Chain Door Guard – Door Chain Lock for Door and Home Security, 3-5/16 In., Solid Brass Construction with a Satin Nickel Finish (Single Pack)


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Product guides and documents

Product Description

Product Description

Secure your home or office doors with additional security with the U 10304 Chain Door Guard. This door chain lock is a security locking device for doors, allowing a door to be slightly opened to allow safe viewing and ventilation. It can also be placed out of reach of children, high on a door, so they cannot open the door themselves and enter or exit into dangerous areas. This chain door guard is constructed of extruded brass with a satin nickel plated finish and a 6 inch, 8-link welded steel chain It’s strong and durable, sure to last, and installation is quick and easy. All installation fasteners are included, and it can be used on a variety of door types and can be placed over or beside door casing. When this chain door guard is fully assembled, and engaged from base to keeper, the chain will extend to 4-5/8 inch. To determine the maximum distance the chain door guard secures a door for safe viewing or ventilation, subtract the thickness of the door from 4-5/8 inch(approx. 3 inch). The smaller chain-holder base measures ¾ inch wide, and the wider chain lock keeper measures 3-5/16 inch long; both with a height of 2 inch.

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.

WARNING:

CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

Important information

Safety Information

WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov

Customer reviews

4.5 out of 5 stars
4.5 out of 5
3,783 global ratings

Customers say

Customers like the quality, ease of installation, appearance and value of the door lock. They mention that it's strong, substantial and easy to install. They appreciate the security it provides and that it is good value for money. Customers are also satisfied with color. However, some customers dislike the sturdiness and size of the product.

AI-generated from the text of customer reviews

282 customers mention202 positive80 negative

Customers like the quality of the hardware. They mention that it's strong, substantial, and antiqued. Some say that the product is great and value for money. Customers also say that it gives a good sense of security, is easy to install, and works well.

"This security chain for doors provides a comforting sense of safety. Sturdy build and reliable functionality make it a trustworthy addition to any..." Read more

"...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." Read more

"It feels cheap upon first inspection. But it's going to serve its purpose of keeping my kids in the house so they can't just walk out the door...." Read more

"easy to install, so far working good." Read more

120 customers mention117 positive3 negative

Customers find the installation of the hardware to be super easy. They mention that it comes with everything they need to install it and that it takes about 5 minutes from start to finish.

"Good. Easy to install. Put it a little above so the child can not reach it...." Read more

"...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." Read more

"easy to install, so far working good." Read more

"Works how it’s supposed to. Easily installed" Read more

65 customers mention61 positive4 negative

Customers are satisfied with the appearance of the hardware. They mention that it looks clean, crisp, and modern. The finish is nice and it goes great with old-timey doors. It is a perfect match to the hardware they replaced several years ago.

"Looks nice and does the job." Read more

"Brass looks great" Read more

"...Otherwise, it is perfect match to the hardware we replaced several years ago and I'm very happy about that! The quality is very good." Read more

"...Installed easy, looked nice, worked greatAnd then the ball at the end of the chain just fell off, and now it's completely useless...." Read more

46 customers mention34 positive12 negative

Customers like the security of the door lock. They say it's easy to install, adds a small sense of security, and is a good deterrent for forced entry. Customers also say the chain is strong and provides a comforting sense of safety. They feel safer at night and are happy with the product.

"This security chain for doors provides a comforting sense of safety...." Read more

"Good door guard, exactly what I was looking for." Read more

"...Definitely has been giving me a false sense of security. We’ll try something different this time around." Read more

"...Took about 5 minutes from start to finish. Extra layer of security. I mounted it high so the kids couldn't open the door to strangers...." Read more

40 customers mention40 positive0 negative

Customers appreciate the value of the lock. They say it's a good quality product for the price, sturdy, and worth it. Customers also mention that the lock is a great buy, with superb fit and finish regardless of price.

"...Price point for 2 units is also affordable and efficient. Good 2 go." Read more

"Good quality product for the price" Read more

"This is really great product and value for money. Easy to install and material quality is really good...." Read more

"...Overall pretty straight forward product and a good value." Read more

20 customers mention20 positive0 negative

Customers are satisfied with the color of the hardware. They mention that it has a great bronze color that matches their door perfectly. Some say that the finish is a nice dark brown with a copper accent around the edges.

"...It’s a nice dark brown with a copper accent around the edges. It looks expensive compared to what the price of it is. Haven’t had a problem yet...." Read more

"...Basic security and works. The finish matched the color of my door." Read more

"Works great, easy to install and it matches our oil rubbed bronze hardware on our doors...." Read more

"Works just as it should. Looks great and matches the door knob and lock trim. It'll prevent my toddler from making his great escape." Read more

28 customers mention3 positive25 negative

Customers are dissatisfied with the sturdiness of the hardware. For example, they mention the screws are weak, broke when installing, and are of low quality. Some say the screws were stripped and didn't last even two weeks.

"The screw-heads popped right off when using for the first time (moments after installation)...." Read more

"...Sturdy and easy to use. Great pricing too.*update: not very sturdy. Someone in my house tried to open the door and and the latch snapped...." Read more

"Do not buy. The screws are extremely low quality and the head came off as I was attaching it - rendering the entire unit useless, and now past..." Read more

"Not very secure. The person I was trying to keep out managed to break right thru this chain & proceeded to make threats against me...." Read more

24 customers mention4 positive20 negative

Customers are dissatisfied with the size of the hardware. They mention that the chain is too short, the screws are too small, and the door is too large. Some say that they used a big drill bit and will have to put bigger screws in.

"Wanted to replace old brass chain guard. This one is a bit smaller and holes did not line up with old standard." Read more

"...What? You can see from the pics that they are too long for any door. I was hoping maybe the outside casing was thicker. I was wrong...." Read more

"...So, yay! The chain section was much shorter than the chain on the old one. I should have measured before installing that part...." Read more

"...around your door, which you almost certainly will, the chain is going to be too short to mount the lock in the standard horizontal position...." Read more

Buena calidad y resistencia
4 Stars
Buena calidad y resistencia
Por el momento está bien. No ha perdido su color y ha aguantado cuando entramos a casa sin saber que está puesta y se pone aprueba su resistencia. Fácil de instalar.
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Top reviews from the United States

Reviewed in the United States on December 12, 2023
Color Name: Satin NickelVerified Purchase
Reviewed in the United States on December 29, 2023
Color Name: Satin NickelVerified Purchase
One person found this helpful
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Reviewed in the United States on September 3, 2023
Color Name: Satin NickelVerified Purchase
2 people found this helpful
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Reviewed in the United States on December 26, 2023
Color Name: Classic BronzeVerified Purchase
Reviewed in the United States on January 3, 2024
Color Name: Satin NickelVerified Purchase
Reviewed in the United States on November 21, 2023
Color Name: Satin NickelVerified Purchase
Reviewed in the United States on October 3, 2023
Color Name: Satin NickelVerified Purchase
Reviewed in the United States on September 12, 2020
Color Name: Classic BronzeVerified Purchase

Top reviews from other countries

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Débora Lopes
3.0 out of 5 stars Parafusos não vieram no tamanho certo.
Reviewed in Brazil on March 20, 2024
Color Name: Satin NickelVerified Purchase
Melissa
5.0 out of 5 stars Front door
Reviewed in Canada on February 17, 2024
Color Name: Classic BronzeVerified Purchase
Richard
5.0 out of 5 stars Decent buy for a decent price!
Reviewed in Canada on January 25, 2023
Color Name: Satin NickelVerified Purchase
One person found this helpful
Report
Hafez Mousavi
4.0 out of 5 stars Works fine
Reviewed in Canada on May 24, 2022
Color Name: Satin NickelVerified Purchase
Moon
5.0 out of 5 stars Super easy to install
Reviewed in Canada on August 16, 2023
Color Name: Satin ChromeVerified Purchase
One person found this helpful
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