cero Frienburg

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What Our Customers Have to Say

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Rustic River Lodge - Case Study

Celebrating the natural beauty of this Tennessee site, Home Design Works envisioned a timeless mountain home to foster connection and comfort. Two bifold door systems in open corner configurations honor the view.

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River House Retreat - Featured Article

For homeowners who frequently entertain family, friends, and business associates, transforming the great room to host 120 people was a key priority. Opting for a cero sliding door, the space now facilitates an indoor-outdoor space.

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“The NanaWall was a central element to the achievement of a smaller home feeling expansive. The NanaWall visually expanded the perceived space of the main living area so that our “not-so-big house” of 1,469 square feet feels larger than our prior house that was more than twice the size. We could not have achieved our living-large remodel without NanaWall!”

— Greg Kelly, Homeowner

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Bifold glass doors frame a modern living and dining area with wood floors, stone fireplace, and floor‑to‑ceiling windows overlooking scenic mountains

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Bifold glass doors connect a modern living room with stone fireplace and wood floors to scenic mountain views, creating seamless indoor-outdoor living

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Interior view of dining room with fully open corner bifold glass doors, creating a seamless transition to the outdoor patio and golf course

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Modern living area with large sliding glass doors opening to patio, creating bright indoor-outdoor living and showcasing clean contemporary architectural style

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Interior living space with folding glass doors opened to the deck, part of a Houzz-featured project highlighting warm wood finishes and indoor-outdoor living

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Segmented curved sliding glass walls at JW Marriot Nashville

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cero minimal moveable glass walls - opening exterior

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Folding glass patio doors in modern residential enhance seamless indoor‑outdoor flow.