Custom pass-through windows designed for California homes — manufactured for effortless opening, daily durability, and the kind of indoor-outdoor living this state was made for.
A closed kitchen feels cramped, disconnected, and frustrating — especially when you’re hosting guests outside or want to enjoy the California weather while you cook. Poor airflow, no easy serving access, and blocked sightlines all take the joy out of your space.
At OpenUp Windows, we solve this with custom-engineered pass-through window systems that open wide, operate smoothly, and connect your indoor kitchen directly to your patio, deck, or backyard. Every system we build is designed for real daily use — easy to operate, built to last, and made to look exceptional in your home.
For the first 10 years, OpenUp® protects every piece of your window apart from the glass. For the next 40 years after that, Accoya® ensures that your wood is safe from weather and pest damage—guaranteed.
All OpenUp® pass through windows are custom-built to order and shipped within 4-6 weeks. Up to 100% faster than the competition on windows of all sizes.
We design and manufacture custom-sized windows tailored precisely to your kitchen layout. Every system improves airflow, natural light, and serving access between your indoor kitchen and outdoor space.
Our gas strut systems open upward with ease, creating wide, unobstructed openings. Sturdy, smooth, and designed for long-term daily use across all California weather conditions.
We offer ongoing maintenance and servicing for all our awning windows — checking seals, mechanisms, and frames to keep everything operating perfectly year after year.
Fully automated pass-through windows with simple control options. Ideal for larger openings, modern homes, and homeowners who want premium comfort built in.
For those who want maximum opening width, our folding panel systems stack neatly to one side, essentially removing the wall between your kitchen and the outdoors.
California homes have unique requirements — from the coastal humidity of San Diego and the Bay Area to the dry heat of the Central Valley and the mountain climates near Lake Tahoe. Our pass-through windows are designed to perform across all of California’s 16 climate zones.
We also handle the compliance side so you don’t have to. All our windows are built to satisfy California Title 24 Building Energy Efficiency Standards, which apply to most window remodels and new installations. Our glass meets required U-factor and SHGC ratings, and we provide the documentation your building inspector needs.
Whether you’re in Los Angeles, San Diego, the Bay Area, Sacramento, or anywhere in between — we know California, and we build for it.
The most popular application. Serve food and drinks directly outdoors while staying connected to your indoor kitchen. Perfect for weekend entertaining and daily al fresco dining.
Turn your backyard kitchen into a proper outdoor bar. A pass-through window gives you a dedicated serving counter and keeps cold drinks cold until the moment you need them.
Keep snacks and drinks flowing to the pool area without running in and out. A pass-through window from the kitchen to a pool-adjacent covered space is a game-changer for summer living.
Accessory dwelling units with compact kitchens benefit enormously from a pass-through window that opens up the space and improves ventilation.
Not all pass-through windows go outside. An interior kitchen cutout to a dining or living area brings back a smart mid-century feature — perfect for open-concept living without fully knocking down walls.
A pass-through window built into a dedicated home bar or beverage station — whether in a basement, games room, or entertainment space — turns any gathering into a proper hosting experience.
OpenUp® Windows feature the strongest materials on the market.
Recyclable aluminum extrusions meet the most sustainable wood available.
Your window ships in 4–6 weeks, regardless of size.
When you invest in an OpenUp pass through window, you can rest easy knowing your long-term protection is guaranteed.
Specifically, OpenUp® protects every piece of your window (apart from the glass) for the first 10 years. For the next 40 years after that, Accoya® ensures your wood is safe from weather and pest damage.
A pass-through window is a wide-opening window — typically in a kitchen — that creates a direct connection between your indoor space and an outdoor area like a patio, deck, or yard. It makes entertaining easier, improves airflow, and brings more light into your home.
Gas strut windows hinge at the top and open upward, supported by gas pistons for easy lifting. Bi-fold windows fold in panels to the side, creating a wider opening. Motorized systems automate either style for hands-free operation. We’ll recommend the best fit for your kitchen layout and lifestyle.
Accoya® is a sustainably sourced, acetylated wood that resists moisture, rot, and warping far better than conventional timber. It’s one of the highest-performance wood frame materials in the world — ideal for California’s coastal humidity and inland heat. It also holds paint and finishes exceptionally well.
Absolutely. Every window we install is custom-built to your specific wall dimensions. We don’t sell off-the-shelf products — your window is made to fit your home exactly.
No. When properly sealed and closed, our windows are fully weathertight. We use high-quality seals, weather stripping, and precision-fitted frames to ensure no drafts, bugs, or moisture get through.
