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Windows 101

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There are many factors to consider when selecting your windows. Understanding how each style functions and the value it can add to your space is a great place to start.

outdoor living

To help you decode the wide world of window options, we turned to Williams Lumber and Home Centers. With multiple locations, including two design centers in Pleasant Valley and Rhinebeck, Williams Lumber and Home Centers has been a go-to for home improvement in the Hudson Valley since 1946.

“Few features of the home have as large of an impact on both its function and design than windows. Every type of window has a role to play, whether that’s for added light, air flow, or ease of use.” says Kim Williams, SVP of Retail Operations at Williams Lumber and Home Centers.

Single Hung

The single-hung window is the quintessential window type. It’s a clean, classic style that slides up to let air flow in and out through the bottom window. They’re versatile, affordable, and easy to use.

kitchen windows

Double Hung

With double-hung windows, the top window also opens independently for fresh air at the both top and bottom levels. Double-hung windows are great for areas where you have enough space and flexibility to easily reach the top.

williams hallway windows


Casement windows are hinged on one side and swing inward or outward with a crank or push-out operation. That means you get ample daylight through a single, uninterrupted pane of glass, clean sightlines to the outdoors, and plenty of fresh air.


Sliding or Gliding windows are a go-to option if you’re looking to save space. They open horizontally, so they’re well suited for tight spaces without a lot of access, like over the kitchen sink.

williams kitchen


Awning windows are hinged at the top of the frame and like casements, swing outward with a crank or push-out operation. They’re named for their most-used location—tucked under the awnings of your roof so they can bring in a refreshing breeze even in wet weather.

williams pantry window

Bay and Bow

Though known for their cozy interior nooks, bay windows function primarily to open up a room with three-dimensional views and light with three or more windows that form corner angles. Bow windows are similar to bays, but have smooth curves instead of corners and are made up of at least four or more connected windows.


If you have romantic views like a lush garden or mountains in the distance that you’d love to bring to your interior experience, a statement picture window is definitely calling your name. A picture window is a type of fixed window that doesn’t open, but what you trade in access to air flow you get back in expansive views and light.

williams office window

williams living room

At either of Williams’ Design Centers, you and your designer, architect, or contractor can work with their experienced associate teams to envision and execute an entire plan for your window installations. The experts at Williams can guide you through Marvin’s three premium product collections—Signature, Elevate, and Essential—each with its own range of customization options.

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