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What is a pass-through window?

If you live to entertain and be outdoors, we’d like to introduce you to your perfect match. The pass-through window is here to let you live your best life! 

A woman hands a plate of food out her Folding Pass-Through Window to a child outside.

Serve up drinks without missing out on a single joke — that’s the magic of a pass-through window. Ideally suited to connect a kitchen with a deck, patio, or pool area, a pass-through window opens up your wall completely, just like a door, so you can be inside and outside all at once. 

What is a pass-through window?

This type of window is called a “pass-through” because it allows you to do just that — pass the drinks, grillables, and more between inside and outside. With this great functionality, plus the ability to bring in a flood of natural light and fresh air, a pass-through window is a showstopping addition to your most-used spaces. 

Where do pass-through windows work best?

Between a kitchen and outdoor living space is the most popular spot for a pass-through window. A kitchen pass-through window can replace a backsplash behind a sink, sit flush with a counter to double your buffet space, open up your bar area to the outdoors, and more!

As interest in indoor/outdoor living has increased over the past few years, we’ve noticed a rise in more sophisticated “outdoor rooms.” A pass-through window can be integrated into these spaces to improve flow — think of it like a patio door but requiring less space. Here are a couple of ideas:

  • Next to a pool, it makes it easy to hand out snacks and sunscreen — with less dripping on the floor!
  • Connecting to a porch, it can be used in all types of weather and even extend the outdoor living season in a colder climate, especially if there’s a fireplace.
  • Between an indoor and outdoor kitchen, a pass-through window allows you to utilize both spaces to their fullest! 
An open pass-through window connects an indoor kitchen with white oak cabinetry and marble countertops with an outdoor kitchen shaded by a large overhang.
You can have the best of both worlds when your pass-through window connects your indoor kitchen with your outdoor kitchen. This MultiGlide™ Pass-Through Window is installed flush with the counter and pockets into the wall for a completely clear opening.  
Products Shown
Andersen pass-through window over sink with view of pine trees
Pass-through window

How does a pass-through window work?

Operation depends on the type of pass-through window. We offer three options: 

Line drawings of the three different types of Andersen® pass-through windows, including from the left, a Folding Pass-Through Window, MultiGlide Pass-Through Window, and Liftslide Pass-Through Window.

MultiGlide™ Pass-Through Windows

Made of sliding panels that move along individual tracks, this option can either stack to one side or pocket into the wall when open. Automation is also available. 
Line drawings of the three different types of Andersen® pass-through windows, including from the left, a Folding Pass-Through Window, MultiGlide Pass-Through Window, and Liftslide Pass-Through Window.

Folding Pass-Through Windows

Made of accordion panels that run along a single track and stack to the side when open, this option really maximizes the clear opening. It's also available in a corner configuration. 
Line drawings of the three different types of Andersen® pass-through windows, including from the left, a Folding Pass-Through Window, MultiGlide Pass-Through Window, and Liftslide Pass-Through Window.

Liftslide Pass-Through Windows

Made of sliding panels that run along a single track, this option is operated by hardware the lifts and slides the panels. It can be configured into curves and even bend around corners.

How can you customize a pass-through window to fit your home?

You have several options when it comes to matching pass-through windows to fit your space. Here are a few things to know: 

  • Size is not a limit! Liftslide Pass-Through Windows can be massive.
  • Corners are possible with both our Liftslide and Folding Pass-Through Window.
  • Curves are possible when you select a Liftslide Pass-Through Window. 
  • Contemporary- and traditional-style panels allow you to customize your look.
  • With 50-plus color options and a variety of wood species and stains, you can dream in color.
  • Performance and energy efficiency are part of the package, more details in the FAQs below. 
A kitchen with a modern design featuring wood cabinetry, black clerestory windows, and a monumental pass-through window that’s installed flush with the countertop.
Pass-through windows can be configured to all sizes, from 38" wide by 41" high at the smallest to monumental custom sizes! Featured here is a pocketing, automated Liftslide Pass-Through Window. This is your option if you’re looking for the largest size — it can be 52’ wide by 12’ high.  

3 ways to make the most of a pass-through window

Here are some tips for planning a highly functional and durable indoor/outdoor space. 

1. Give yourself counter space on both sides

A pass-through window can be installed so the sill is flush with a countertop giving you the opportunity to extend the countertop outdoors. Other times, a slab might be mounted to the exterior wall, or an outdoor bar built under the window. Whatever you decide, having some sort of countertop on both sides of the window will help maximize its functionality. 


An open pass-through window connects a kitchen with a concrete patio and outdoor pool.

2. Choose the right configuration

How your window opens will affect the amount of space you have available, here’s what to know:

  • Liftslide Pass-Through Windows and MultiGlide Pass-Through Windows can both pocket (disappear into the wall) to maximize the opening. Just keep in mind that pocketing requires extra thick walls, so this usually works best in a new construction home.  
  • A Folding Pass-Through Window will also give you a wide opening since the accordion panels tuck to the side when open — virtually disappearing. This option can work well in a remodel where walls might not accommodate pocketing. 
  • Automation is available with MultiGlide Pass-Through Windows, so you can open your window with the touch of a button. This option can be combined with pocketing for a totally clear opening and hands-free operation.  

A woman opens an Andersen Folding Pass-Through Window which connects a kitchenette to a patio.

3. Plan for storage, seating, and shade

Make sure it’ll be comfortable to use your pass-through window by considering the following:

  • If you plan to use your pass-through window mainly as a bar, you might want to leave room for interior cabinetry to house glassware, an under-counter fridge, and a sink.
  • Leave room for seating outdoors. We’ve seen outdoor-friendly high-tops as well as permanently mounted outdoor stools.
  • Consider the angle of the sun. If you’ll be in full western sun or sitting on a heat-absorbing patio, an awning or overhang might help you make the most of your window. 

An open kitchen pass-through window sits flush with the countertop, which creates an outdoor bar where a woman sips her cocktail and looks out over the swimming pool.

FAQs about pass-through windows

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A double row of black casement windows above a kitchen sink.

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