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A Guide to Measuring & Replacing Sweep Locks and Keepers for Windows

A Guide to Measuring & Replacing Sweep Locks and Keepers for Windows

Windows play a crucial role in the aesthetics and functionality of any home or building. Among the various components of a window, sweep locks are essential for ensuring security and proper sealing. However, when it comes to replacing or installing sweep locks, precise measurements are vital to ensure a perfect fit. In this guide, we'll delve into the process of measuring sweep locks and understanding the key dimensions required for replacement.

Understanding Sweep Locks

Sweep locks are mechanisms commonly found on sliding windows. They are designed to secure the window in a closed position while also helping to seal gaps between the sash and the frame, thus preventing drafts and improving energy efficiency. Sweep locks typically consist of a latch that engages with a keeper attached to the window frame.

Measuring for Replacement

Before purchasing a new sweep lock or keeper, it's essential to take accurate measurements to ensure compatibility. The process involves measuring the distance between the holes where the sweep lock and keeper are mounted.

Step-by-Step Measurement Guide:

Remove the Existing Sweep Lock: 

Start by removing the existing sweep lock from your window. If there are only holes present, take note of the distance between them.

Measure Hole-to-Hole Distance: 

Using a measuring tape or ruler, determine the distance between the holes, from center hole to center hole, where the sweep lock was mounted. This measurement is crucial for finding a replacement with the correct dimensions.

Check for Keeper Requirements:

If your window requires a keeper, repeat the same process for measuring the hole-to-hole distance where the keeper will be installed. This measurement ensures compatibility with the new sweep lock.

Consider Additional Features: 

Pay attention to any additional features or design elements of the sweep lock or keeper, such as a bump or protrusion on the edge. These features may serve specific functions, such as assisting the sweep when closing.

Finding the Right Replacement

Once you have obtained the necessary measurements, it's time to find the right replacement sweep lock and keeper. Many manufacturers provide detailed specifications for their products, including dimensions and compatibility information based on window brand.


Replacing sweep locks on windows is a task that requires careful measurement and attention to detail. By following the steps outlined in this guide, you can ensure that your replacement sweep lock fits perfectly and functions as intended. Remember to take accurate measurements of the hole-to-hole distance and consider any additional features that may affect compatibility. 

With the right tools and information, you can maintain the security and efficiency of your windows for years to come. For further assistance getting replacement parts or answers to your questions, Contact WHD! Our experts are willing and fully capable of helping you.

Check Out Our Video on Sweep Locks & Keepers:

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