Choosing the right window lock can make a big difference in everyday safety, ventilation control, and peace of mind. The best options for double-hung windows should fit securely, install cleanly, and hold up to regular use.
Below, we break down practical choices for replacement hardware, child-safety control, and added security so you can match the lock to your window type and household needs.
Best 10 Double Hung Window Locks Picks for 2026
Security Bar Barrier
WinLock Double Hung Security Bar
- Blocks both top and bottom sash movement
- Adjustable from 3 to 24 inches
- Solid steel, keyed tamper-resistant design
Best For: Holding a double hung window open safely with an AC or fan
Upgrade Sash Lock
- Cam-action hook pulls keeper tight
- Anti-jimmy studs add security
- Fits 1-3/4 inch mounting hole spacing
Best For: Upgrading a vinyl single or double hung window lock
Travel-Limit Device Pair
- Limits sash travel on hung windows
- Includes matched left and right devices
- Euro white plastic finish
Best For: Controlled opening on single or double hung residential windows
Classic Bronze Sash Lock
Prime-Line Diecast Double Hung Lock
- Diecast build for dependable hardware
- Bronze baked-on enamel resists corrosion
- Fits single and double hung windows
Best For: A basic bronze replacement sash lock for vertical sliding windows
Bulk Replacement Pack
10-Pack White Sash Window Locks
- Includes 10 locks and 40 screws
- Cam action hook draws the keeper tight
- Zinc alloy with rust-resistant finish
Best For: Replacing several white sash locks at once
Cam Action Security Pack
10-Pack White Diecast Sash Locks
- 10-pack for multiple windows or spares
- Cam hook tightens keeper on lock
- Diecast zinc alloy with plated finish
Best For: Multi-window replacement with a white cam-action lock
4-Pack Universal Sash Locks
- 4 locks plus 16 screws included
- 2.4-inch hole spacing for many windows
- Metal build with corrosion-resistant coating
Best For: Replacing several worn locks on mixed-frame sliding or double-hung windows
QWORK Heavy-Duty 10-Pack
- 10 locks with stainless steel screws included
- Cam hook and anti-jimmy studs improve hold
- Zinc alloy body with corrosion resistance
Best For: Bulk replacement projects needing sturdier window security hardware
ZUONAI Compact 2-Pack
- 2 locks with 8 screws included
- Cam-action design tightens the keeper
- Zinc alloy body with anti-jimmy studs
Best For: Small replacements on compatible double-hung or sliding windows
Replacement Sash Lock – Prime-Line F 2588 Sash Lock
If you need a straightforward option for double hung window locks on vinyl windows, this Prime-Line sash lock is built to replace worn or missing hardware and help the sash pull tight against the keeper. The cam-action design improves closure, which can help reduce drafts while restoring basic window security.
Best For: Homeowners replacing a damaged or missing lock on a vinyl single or double hung window with 2-1/16 inch hole centers.
Pros:
- Cam-action mechanism draws the sash and keeper together for a tighter seal.
- Diecast zinc construction with a corrosion-resistant white finish.
- Includes lock, keeper, and mounting fasteners for DIY installation.
- Designed for 2-1/16 inch hole spacing on flush meeting rails.
Cons:
- Fit is not universal and must be matched to the existing hole spacing.
- Made specifically for vinyl windows, so it is not a one-size-fits-all repair.
For a simple replacement lock, this model focuses on fit and function rather than extras. It is a practical pick when you want to restore the window’s latch, improve closure, and keep installation basic.
Security Bar Barrier – WinLock Double Hung Security Bar
For buyers comparing double hung window locks that also support child safety and burglary prevention, this WinLock bar acts as a physical stop for both the top and bottom sash. It is designed to secure an open window around an air conditioner or fan, and it can also be used for added protection during storm season.
Best For: Securing double hung windows with an AC or fan in place, or adding a lockout-style barrier for home safety.
Pros:
- Prevents both the top and bottom of a double hung window from being opened.
- Solid steel construction with a tamper-resistant keyed design.
- Adjustable from 3 to 24 inches for different window setups.
- No tools needed for installation, according to the product notes.
Cons:
- Designed as a security bar rather than a traditional sash lock.
- Fit depends on measuring sash thickness and available opening width.
- Best suited to windows that are being held open, especially with appliances.
This is a specialized solution, not a standard replacement latch. If your goal is to keep a double hung window opened safely while blocking unwanted movement, it offers a more robust physical barrier than a typical lock.
Upgrade Sash Lock – Prime-Line F 2653 Sash Lock
This Prime-Line option is a practical pick if you want double hung window locks that replace or upgrade an existing sash lock on vinyl windows. The cam-action hook pulls the keeper tight, and the anti-jimmy studs add an extra layer of security for vertical sliding windows.
Best For: Replacing a worn sash lock on a single or double hung vinyl window with 1-3/4 inch mounting hole spacing.
Pros:
- Cam-action latch helps create a tighter seal when locked.
- Anti-jimmy studs are built into the lock body for added security.
- Diecast construction with antique brass finish.
- Includes mounting hardware and instructions for Phillips screwdriver installation.
Cons:
- Requires 1-3/4 inch mounting holes on center.
- Finish is antique brass, which may not match every window frame.
- Sold as a single pack, so multiple windows need multiple purchases.
Overall, this is a solid replacement-style sash lock for homeowners who already know their mounting dimensions. It emphasizes secure closure and weatherizing, making it a good fit when you want function first.
Travel-Limit Device Pair – Brixwell Euro White WOCD Pair
If you are looking for double hung window locks that limit how far a sash can open, this Brixwell pair is designed as a window opening control device rather than a latch. The set mounts on the window and helps control travel on single or double hung windows where safety and limited opening are important.
Best For: Limiting sash travel on single or double hung windows in residential spaces.
Pros:
- Designed for use on single or double hung windows.
- Includes a left and right device for balanced installation.
- Compact plastic design fits common sash profiles with limited space.
- Euro white finish blends with many vinyl or painted frames.
Cons:
- Not a traditional keyed lock or sash latch.
- Plastic construction may not suit buyers seeking metal hardware.
- Requires suitable window profiles for proper mounting.
This pair is best understood as a safety and travel-limiting accessory, not a replacement lock. For homes that need controlled opening on hung windows, it offers a simple, low-profile approach.
Classic Bronze Sash Lock – Prime-Line Diecast Double Hung Lock
If you need a straightforward solution for double hung window locks, this Prime-Line sash lock is built for basic, dependable securing of vertical sliding windows. Its diecast construction and bronze baked-on enamel finish make it a practical pick when you want a corrosion-resistant replacement that installs with only a few simple tools.
Best For: Replacing a standard sash lock on single or double hung windows with a bronze finish.
Pros:
- Diecast construction for long-lasting locking hardware
- Bronze baked-on enamel finish that resists corrosion
- Cam locking mechanism for standard sash-lock use
- Designed for vertical sliding, single, and double hung windows
Cons:
- Single-pack format is best for one replacement only
- Dimensions should be checked carefully before ordering
- Not a smart home product
This is a solid choice if you want a simple, traditional sash lock that matches common double hung window hardware and prioritizes easy installation over extra features.
Bulk Replacement Pack – 10-Pack White Sash Window Locks
For shoppers comparing double hung window locks in a multi-pack, this 10-piece set focuses on replacement convenience and everyday security. The cam action hook design pulls the keeper tight when locked, and the zinc alloy construction with multi-layer electroplating is made to be more durable than plastic alternatives.
Best For: Replacing multiple window locks across a home with a white finish and matching screws included.
Pros:
- Includes 10 locks and 40 screws for multiple windows
- Cam action hook helps draw the keeper tight when locked
- Zinc alloy build with multi-layer electroplating for corrosion resistance
- Works with horizontal, vertical single, and double-hung windows
Cons:
- Requires drilling and screwdriver installation
- Window thickness must be more than 16mm
- Windows need to align on the same horizontal line to lock properly
This pack makes sense when you want several matching replacements and prefer a practical, rust-resistant lock for common sliding and double hung window setups.
Cam Action Security Pack – 10-Pack White Diecast Sash Locks
If you want double hung window locks with a simple cam action design and a larger replacement quantity, this 10-pack is built for practical home use. It uses diecast zinc alloy construction with multi-layer electroplating, and the included screws make it a straightforward option for sliding windows and doors.
Best For: Installing matching white replacement locks on several sliding or double hung windows.
Pros:
- 10-pack provides enough locks for multiple windows or backups
- Cam action hook tightens the keeper when locked
- Diecast zinc alloy construction with corrosion-resistant plating
- Compatible with horizontal, vertical, single, and double-hung designs
Cons:
- Installation requires a 3mm pilot hole and basic tools
- Color finish is limited to white and silver tones
- Product listing does not specify all included contents in detail
This set is a useful pick when you want a durable, no-frills replacement pack for multiple windows and prefer a cam lock style that aims to draw the keeper tight.
4-Pack Universal Sash Locks – White Replacement Set
If you need double hung window locks that can cover multiple windows at once, this 4-pack replacement set is built for practical, everyday security. The zinc/alloy-style metal construction, corrosion-resistant coating, and 2.4-inch mounting hole spacing make it a straightforward option for many single and double-hung windows, plus vertical or horizontal sliding frames.
Best For: Homeowners or offices replacing several worn window locks on wood, aluminum, or vinyl frames.
Pros:
- Includes 4 locks and 16 screws for multiple installations.
- Corrosion-resistant metal build is designed for long-lasting use.
- Universal 2.4-inch hole spacing supports many sliding window setups.
- Works with wood, aluminum, and vinyl window frames.
Cons:
- Requires drilling with a 3mm bit for installation.
- Compatibility still depends on matching the mounting-hole spacing.
Overall, this is a solid replacement choice when you want a simple, durable set of double hung window locks without buying individual pieces one by one.
QWORK Heavy-Duty 10-Pack – Cam-Action Security Locks
For buyers comparing double hung window locks in a bulk kit, this 10-pack is aimed at security and consistency across multiple windows. The cam-action design pulls the keeper tight, while the zinc alloy body and electroplated finish are intended to resist wear, corrosion, and rust on vertical or horizontal sliding windows.
Best For: Replacing or upgrading many window locks at once with a heavy-duty metal design.
Pros:
- 10-pack makes it useful for larger replacement projects.
- Cam hook design pulls the keeper tight for a secure hold.
- Anti-jimmy studs add extra resistance against prying.
- Zinc alloy body with electroplating is built for durability.
Cons:
- 2.18-inch center-to-center spacing must be verified before buying.
- Best fit depends on your window edge width and installation setup.
This set makes sense if you want a sturdier, higher-count option and are willing to measure carefully before ordering. It is especially practical when the goal is to standardize several double hung window locks with the same hardware.
ZUONAI Compact 2-Pack – White Cam Sash Locks
Product not found.When you only need a small number of double hung window locks, this 2-pack offers a compact replacement option with a cam-action hook and anti-jimmy studs. The zinc alloy die-cast body and multi-layer electroplating are designed to hold up better than plastic locks, making it a practical pick for securing vertical or horizontal sliding windows.
Best For: Small repairs or replacing a pair of worn sash locks on compatible windows.
Pros:
- Cam-action hook draws the keeper tight when locked.
- Zinc alloy die-cast construction is built for durability.
- Anti-jimmy studs add extra security against prying.
- Stainless steel screws are included for installation.
Cons:
- 2.08-inch hole spacing must match your window before buying.
- Small 2-pack is less convenient for larger projects.
This is a good fit if you are replacing just one or two double hung window locks and want a metal upgrade instead of a plastic latch. As with any sash lock, measuring first matters more than the color or style.
How We Picked the Best Double Hung Window Locks
We focused on fit, durability, ease of installation, and the type of protection each lock is meant to provide. For Double Hung Window Locks, that means checking hole spacing, material quality, compatibility with vinyl or aluminum frames, and whether the design is intended for simple sash retention or stronger security and child-safety use.
We also favored products that cover common buyer needs: direct replacement sash locks, cam-action designs, opening control devices, and security bars for windows that need more than a basic latch.
Quick Comparison
Most buyers will fall into one of three groups. Basic sash locks are best for replacing worn or missing hardware. Cam-action replacements are a good middle-ground when you want a tighter close and better hold. Opening control devices and security bars are the stronger choices when child safety, air-flow limitation, or anti-burglary support matters more than a standard latch.
Key Buying Factors for Double Hung Window Locks
Fit and Hole Spacing
Measure the existing lock before buying. Many replacement Double Hung Window Locks are built around specific hole-center spacing, and even a small mismatch can prevent a proper install. Also confirm whether the lock is made for vinyl, wood, or mixed-frame windows.
Lock Style and Security Level
Cam-action locks are common because they pull the sash together tightly and are easy to use. If you need to limit how far a window can open, look for an opening control device. If your priority is stronger physical deterrence, a window security bar may be the better choice.
Material and Finish
Diecast metal locks are usually more durable than basic plastic options. Finishes like white, bronze, or antique brass matter not only for appearance, but also for matching existing hardware and reducing the need for visible replacements.
Installation and Quantity
Single-pack locks make sense for one-off repairs, while multipacks are often better value if you are updating several windows. Keep in mind that some sets include keepers or matching parts, while others are only the lock body.
Who Should Buy Which Double Hung Window Locks?
If you need a straightforward replacement, choose a direct-fit sash lock with the correct hole spacing. If you want stronger everyday closure and a cleaner window seal, pick a cam-action model. If you have children or want to control ventilation, choose a window opening control device. And if the goal is extra deterrence for a partially open window, a solid security bar is the strongest option among these categories.
In short, the best choice depends on whether you are replacing broken hardware, improving home security, or adding a safer way to manage open windows.