Window and door handles are popular for a few reasons:

Functionality: Window and door handles serve the essential function of allowing people to open and close doors and windows easily. Handles make it easy to operate a door or window, and they can also help with locking and securing the window or door.

Aesthetics: Handles are available in many different designs and finishes, so they can be chosen to match the style of the window or door and the decor of the room. The right handle can add a finishing touch to the overall look of a space.

Durability: High-quality handles can last for many years with proper maintenance. This means that homeowners can avoid the expense and hassle of having to replace handles frequently.

Customization: Handles can be customized to fit specific needs, such as for people with disabilities who need larger or easier-to-grasp handles. Customized handles can also add a unique touch to a home or commercial building.

Window and door handles are used to open and close windows and doors. They come in a variety of styles, materials, and finishes to complement the design of the window or door, as well as the overall decor of the room.

The most common types of window handles include casement handles, which are attached to the side of the window and crank open and close the window, and sliding window handles, which are attached to the bottom of the window and slide the window back and forth.

As for door handles, there are several types including knob handles, lever handles, and handle sets. Knob handles are the most common type and are generally used on interior doors. Lever handles are commonly found on exterior doors and are easier to use for people with disabilities or arthritis. Handle sets are often used on front doors and include a lock and deadbolt for added security.

When choosing window and door handles, it's important to consider factors such as the style of the window or door, the material of the handle, and the functionality of the handle. It's also important to ensure that the handle is the right size and fits properly on the window or door.