Top 10 Secondary Door Lock – Door Lock Replacement Parts

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1. Defender Security

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Defender Security Satin Nickel U 10827 Door Reinforcement Lock – Add Extra, High Security to your Home and Prevent Unauthorized Entry – 3” Stop, Aluminum Construction Finish

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Defender Security #ad - Length is 2 to 019 inch. It can be installed higher on the door where your children can’t reach! Plus, not only can doors not be kicked in by intruders, it protects against lock picking and bumping while in the locked position. Watch the video on this page for installation tips and operating instructions.

Pull projection:1 inch. Drill bit. Width is 1 to 038 inch. Security screws require holes to be pre-drilled with 1/8 in. It helps to ensure any door cannot be opened from the outside. Keep your home safe – designed to withstand 800 lbs. Child-safe and tamper-resistant – this defender security door blocker by prime-line has a spring-loaded design that is both child-safe and tamper-resistant. Pre-drilling – the included 3 in.

Of force, this u 10827 satin nickel finish door reinforcement lock helps to prevent doors from being kicked in, increasing your home security and keeping you and your family safe! Easy installation – the included 3” hardened screws make installation a breeze – extra security and peace of mind can be achieved in just minutes. Additional home security - use this high security door reinforcement lock for additional home security on any swing-in door of any door thickness.
BrandDefender Security #ad
ManufacturerPrime-Line Products #ad
Height3 Inches
Length1 Inches
Weight0.37 Pounds
Width2.43 Inches
Part NumberU 10827
ModelU 10827
WarrantyGoods 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.

2. Defender Security

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3-7/8” Bar Length, Diecast Zinc Construction with a Brushed Chrome Finish, Defender Security U 9901 Swing Bar Lock for Hinged Swing-in Doors – Secondary Security Lock for Door and Home Security

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Defender Security #ad - Security locking device – this u 9901 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.

Durable construction – this swing bar lock is constructed of zinc diecast with a brushed chrome finish. It’s strong and durable, sure to last. 3-7/8” bar length x 2-1/2” height. Product info – this u 9901 swing bar lock has a long, hinged bar, which folds over the closed door to engage the catch. Child-safe security device – this swing bar 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 doors are within reach! Installation fasteners, including plastic shim spacers for leveling, are included.
BrandDefender Security #ad
ManufacturerPrime-Line Products (Home Improvement) #ad
Height2.5 Inches
Length0 Inches
Weight0.41 Pounds
Width3.87 Inches
Part NumberU 9901
ModelU 9901
WarrantyGoods 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.

3. Royal Home & Hardware

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Royal H&H Heavy Duty Swing Bar Lock as Secondary Door Lock Security Latch Guard Clasp for Home Hotel Office Reinforced Solid Stainless Steel Catch

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Royal Home & Hardware #ad - Padded & easy installation: folds over closed door to engage catch. Child safety: out of reach bar catch prevents children from opening the door themselves for child-safe door security. Built to last: all metal construction made from premium stainless steel. Scratch proof entrance clasp in a lasting design. Fasteners included. Security locking device: Door bar latch for hinged swing-in doors, opens entry for safe viewing against intruders. 3-7/8” bar length x 2-1/2”H. For quality, durability and rust proof. Contemporary: beautiful brushed nickel finish.
BrandRoyal Home & Hardware #ad
ManufacturerRoyal Home & Hardware #ad
Weight0.53 Pounds

4. Fankerba

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Secondary Security Door Chain Guard Lock for Home Security,Zin Alloy Construction, Defender Security Heavy Ultra-Thick Door Bolts with Anti-Theft Chain,Hardware Duty Lach Lock for Inside Door

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Fankerba #ad - Size:80x46mm or 3. 26x1. 82inchl*w, sturdy and durable, suitable for all kinds of doors in the home. Security guard:easy to install and operate; Can not be unlocked from the outside, Double security for the inside door, 2 in 1:door bolt door chain.

Fine manufacturing:electroplating process,Good combination of plating,Equipped with mounting screws. The net weight of the product is 109 oz, thick material, and the product is sturdy. Mounting hardware included: 1 door chain lock 2pcs 028inch mmx1. 56 inch screws 2 pcs 024x097 inch screws 4 pcs 024x077 inch screws. Security locking device -bold and hardened, high quality steel chain, constructed of High quality zinc alloy material,to Ensure product strength and safety performance.
BrandFankerba #ad
ManufacturerFankerba #ad
Weight0.68 Pounds

5. PRIME-LINE

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Defender Security U 9847 Patio Sliding Door Loop Lock – Increase Home Security, Chrome Plated, 2-1/8” Hardened Steel Bar with Diecast Base, Install Additional Child-Safe Security

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PRIME-LINE #ad - Durable construction – this door loop lock has a hardened steel locking bar with diecast constructed mounting plate and keeper, with a chrome plated finish. Product info - this locking device features a 2-1/8” reach, 1-3/16”, which is designed to secure the door to the jamb.

Secondary security locking device – this u 9847 patio sliding door loop Lock can be used on a patio sliding door as a secondary security lock for increased home safety. Child-safe security device - this door loop 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. It is also available in 1-1/8”, 1-7/16”, and 2-1/4” reaches.
BrandPRIME-LINE #ad
ManufacturerPrime-Line Products (Home Improvement) #ad
Height7.44 Inches
Length0.63 Inches
Weight0.3 Pounds
Width2.12 Inches
Part NumberU 9847
ModelU 9847
WarrantyGoods 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.

6. PRIME-LINE

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Foot Operated, 3/8 in. Reach, Prime-Line U 9869 Sliding Door Lock, White, Plastic & Steel Components

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PRIME-LINE #ad - Plastic housing and knob with steel plunger bolt. White in color. Reach. 1-3/32 x 1-3/4 in. Used on patio sliding door systems as a secondary security locking device. Hole centers with a 3/8 in.
BrandPRIME-LINE #ad
ManufacturerPrime-Line Products (Home Improvement) #ad
Height5.44 Inches
Length1.5 Inches
Weight0.11 Pounds
Width3.81 Inches
Part NumberU 9869
ModelU 9869
WarrantyGoods 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.

7. erioctry

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1PCS Stainless Steel Heavy Duty Swing Bar Lock as Secondary Door Lock Security Latch Guard Clasp for Home Hotel Office Solid Stainless Steel Catch

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erioctry #ad - Provides extra security to your door while allowing you to slightly open the door for viewing if needed. Installation is quick and easy – additional security for your doors are within reach! Package:1pcs ;material:stainless steel ;Size:10*6. 1cm4*2. 4inch. 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. This swing bar lock can also be installed out of reach of children so they cannot open the door by themselves, providing additional child-safe door security.
Branderioctry #ad
ManufacturerErioctry #ad
Height0.04 Inches
Length0.04 Inches
Weight0.28 Pounds
Width0.04 Inches
Part NumberZL76864SILVER

8. Earl Diamond

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Earl Diamond Stainless Steel Heavy Duty Solid Swing Bar Lock as Secondary Door Lock Security Latch Guard Clasp Satin Nickel

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Earl Diamond #ad - Child safety: out of reach swing bar lock catch prevents children from opening the door themselves for child-safe door security. Service:earl diamond promise provide you quality product and service, if there is any issue when you use it, please feel free to contact us.

Easy installation:installation is quick and easy with the screws in package, the process is simple enough that almost any homeowner can do it easily in minutes. Durable construction:all metal construction made from premium stainless steel with Beautiful brushed nickel finish, For quality, durability and rust proof. Security locking device:home security door lock features steel ball positioning which is a unique locking design that holds locking arm in place so they will not swing around for extra security. Unlocks easily from the inside with a simple swinging motion.
BrandEarl Diamond #ad
ManufacturerEarl Diamond #ad
Height1.1 Inches
Length4.29 Inches
Width2.5 Inches

9. AceMining

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Portable Door Lock Home Security Door Locker Travel Lockdown Locks for Additional Safety and Privacy Perfect for Traveling Hotel Home Apartment College …

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AceMining #ad - High-quality material - the door security device is made of strong stainless steel. Compact design and tailored customer service - size 4. 3 x 1. 26 x 04 inches with 078inch 2 cm and 1. 2inch 3 cm holes, you can put it in a pocket or handbag. Steel surfaces with electroplating and polishing technology ensure a smooth touch and minimize any injury to your skin.

Just insert the metal piece into the slot of the door lock, this door lock can be installed in seconds without any tools, then no one can open the door from outside. A strong door lock with high quality may guarantee prolonged service life. Widely used - the security door stopper contains two holes of different sizes to ensure that all types of door locks are matched. Security and privacy - this portable door lock provides you with extra security and privacy, not even with a key; which is a great helper for you when you are on business and trips, so the door can't be opened from the outside, greatly improving your security and preventing unauthorized entry, or live alone.

If you have any questions, lightweight and small, please do not hesitate to contact us by email immediately. Easy to use - easy to install or remove, and then put the red handle groove to the stud on the metal sheet, close the door, even in emergency situations and in the dark. Perfect for hotels, Airbnbs, dormitories, short-term rentals, bedrooms, or private rooms. Rugged abs plastic cover to prevent damage to doors under pressure.
BrandAceMining #ad
ManufacturerAceMining #ad
Height0.3 Inches
Length6 Inches
Weight4 ounces
Width1.65 Inches
Part Numberrwen-121-gf

10. WINONLY

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Portable Door Lock,Travel Lock, AirBNB, Hotel, Perfect for Traveling, Add Extra Locks for Additional Safety and Privacy, Solid Heavy Duty Lock Prevent Unauthorized Entry, Home,Apartment 1

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WINONLY #ad - Warranty that won’t fail you : portable travel door locks are warranted against manufacturing defects. It's small but will hold your door shut firmly. Portable door lock made of heavy duty steel, the solid door lock are guaranteed to remain as good as new for a very long time. Ideal lock for added protection : portable door lock adds extra security to your room and prevents unauthorized entry, especially when traveling and staying in hotels.

Keep those unauthorized enrty away with Winonly superior travel lock kit. Perfect for travel:small enough to carry in pocket or handbag, Dormitories, Bathrooms, Apartments, this is a very handy device to have when not at home Add a portable door lock to provide effective safety and protection for Hotels, Bedrooms. Easy to use & safer design : no need to nail or screw into anything, take the red handle and insert into the lock in place, just put the medal part goes into the hole on the door jam then you close the door, then no one could get in and in case of an emergency you could remove the lock in seconds in the dark! Add a portable door lock to provide you with a strong sense of safety.

Add extra lock to provide an additional layer of security and peace of mind. Used the latest electroplating and polishing technology to ensure a perfect smooth touch, avoid any injury while using door lock. Stronger & smooth touch : winonly travel door lock is upgraded with better performance and durability. Warranty is valid if door locks are subjected to abnormal conditions, misapplication or abuse. The portable travel lock brings you additional safety, security and privacy.
BrandWINONLY #ad
ManufacturerWINONLY #ad
Height0.7 Inches
Length5.8 Inches
Width3.5 Inches
Part NumberI9889 Plus
ModelI9889 Plus