The Basics of Window Locks: Types, Grades, and Fitting
By:Ms. Joyce Wu
Lake Washington Windows Offers Comprehensive Guide to Window Locks
Window locks can be crucial in keeping your home safe and secure. However, not all window locks are created equal, and it's important to know which type of window latch will work best for each window style in your home. That's where Lake Washington Windows comes in.
Lake Washington Windows is a leading provider of custom windows and doors in Seattle. They offer a comprehensive guide to window locks, including styles, grades, and fit. This guide can help homeowners make informed decisions about which locks will work best for their needs.
Styles of Window Locks
There are several types of window locks, each with its own advantages. Some of the most popular styles include:
- Sash locks: These are the most commonly used window locks. They are installed on the frame of double-hung windows and can be locked and unlocked from the inside.
- Sliding window locks: These locks are installed on the frame of sliding windows and can be locked and unlocked from the inside.
- Casement window locks: These locks are installed on the frame of casement windows and can be locked and unlocked from the inside.
- Keyed locks: These locks require a key to lock and unlock the window.
Grades of Window Locks
Window locks are graded according to their level of security. The grades are determined by the American National Standards Institute (ANSI). There are three grades of window locks:
- Grade 1: These locks offer the highest level of security. They are typically used in commercial applications but can also be used in residential settings.
- Grade 2: These locks offer a moderate level of security and are commonly used in residential settings.
- Grade 3: These locks offer the lowest level of security and are typically used in residential settings.
Fit of Window Locks
It's important to ensure that window locks fit properly. If they are not installed correctly, they may not provide adequate security. Lake Washington Windows recommends consulting a professional when installing window locks to ensure they are properly installed.
Window bars and hasps can also provide additional security for windows. Window bars are installed on the exterior of the window and prevent intruders from gaining access. Hasps are installed on the frame of the window and can be locked and unlocked from the inside.
About Lake Washington Windows
Lake Washington Windows is a family-owned and operated business that has been serving the Seattle area for over 20 years. They specialize in custom windows and doors and are committed to providing their customers with high-quality products and exceptional service.
In addition to their comprehensive guide to window locks, Lake Washington Windows offers a wide range of window and door styles to choose from. They also offer installation services and provide a lifetime warranty on their products.
Conclusion
Window locks can be an effective way to increase security in your home. However, not all window locks are created equal. It's important to choose the right type of latch for each window style in your home and ensure that it fits properly. With the help of Lake Washington Windows' comprehensive guide to window locks, homeowners can make informed decisions about which locks will work best for their needs.

Window locks can be crucial in keeping your home safe and secure. However, not all window locks are created equal, and it's important to know which type of window latch will work best for each window style in your home. That's where Lake Washington Windows comes in.
Lake Washington Windows is a leading provider of custom windows and doors in Seattle. They offer a comprehensive guide to window locks, including styles, grades, and fit. This guide can help homeowners make informed decisions about which locks will work best for their needs.
Styles of Window Locks
There are several types of window locks, each with its own advantages. Some of the most popular styles include:
- Sash locks: These are the most commonly used window locks. They are installed on the frame of double-hung windows and can be locked and unlocked from the inside.
- Sliding window locks: These locks are installed on the frame of sliding windows and can be locked and unlocked from the inside.
- Casement window locks: These locks are installed on the frame of casement windows and can be locked and unlocked from the inside.
- Keyed locks: These locks require a key to lock and unlock the window.
Grades of Window Locks
Window locks are graded according to their level of security. The grades are determined by the American National Standards Institute (ANSI). There are three grades of window locks:
- Grade 1: These locks offer the highest level of security. They are typically used in commercial applications but can also be used in residential settings.
- Grade 2: These locks offer a moderate level of security and are commonly used in residential settings.
- Grade 3: These locks offer the lowest level of security and are typically used in residential settings.
Fit of Window Locks
It's important to ensure that window locks fit properly. If they are not installed correctly, they may not provide adequate security. Lake Washington Windows recommends consulting a professional when installing window locks to ensure they are properly installed.
Window bars and hasps can also provide additional security for windows. Window bars are installed on the exterior of the window and prevent intruders from gaining access. Hasps are installed on the frame of the window and can be locked and unlocked from the inside.
About Lake Washington Windows
Lake Washington Windows is a family-owned and operated business that has been serving the Seattle area for over 20 years. They specialize in custom windows and doors and are committed to providing their customers with high-quality products and exceptional service.
In addition to their comprehensive guide to window locks, Lake Washington Windows offers a wide range of window and door styles to choose from. They also offer installation services and provide a lifetime warranty on their products.
Conclusion
Window locks can be an effective way to increase security in your home. However, not all window locks are created equal. It's important to choose the right type of latch for each window style in your home and ensure that it fits properly. With the help of Lake Washington Windows' comprehensive guide to window locks, homeowners can make informed decisions about which locks will work best for their needs.