Bi-fold patio doors from Infinity from Marvin don't just open, they transform the relationship between your interior and your yard. Panels fold neatly to one or both sides, creating an unobstructed opening of up to 20 feet. When they're open, you have a space. When they're closed, you have a window wall.

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In Pleasanton, Dublin, San Ramon, and Danville, where summer evenings are worth opening up to, that distinction matters. And unlike vinyl or aluminum alternatives, Infinity's fiberglass construction holds its seal, its shape, and its finish through the Tri-Valley's full range of weather, 100°F summers, cold wet winters, and everything in between.

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This is not a door you install and maintain. It's a door you install and forget.

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Key Benefits of Bi-Fold Infinity from Marvin:

• Indoor-outdoor living– Create a seamless transition between your interior and outdoor space. No threshold barriers, no visual interruption.
• Seal integrity built for wide temperature swings – Fiberglass expands at nearly the same rate as the glass it holds, meaning seals that hold through 100°F summers and cold wet winters.
• No repainting. No refinishing. – Infinity's factory-applied ColorPlus finish is applied before the door leaves the plant. It outperforms any field-painted finish.
• Title 24 compliant glass packages – Multiple glass options engineered to meet California's strict energy standards without sacrificing light or views.‍
• Resale value – A premium bi-fold system is a visible, high-impact upgrade that serious buyers notice and value.

Vinyl expands and contracts at nearly three times the rate of the glass it holds. In a climate with significant temperature swings, that movement is what causes seals to fail, frames to warp, and panels to stick.

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Infinity's fiberglass frames expand at nearly the same rate as the glass they hold. That matched expansion rate is why fiberglass doors seal tighter, operate smoother, and perform longer than any vinyl alternative, and why we install Infinity from Marvin exclusively.

• Expansion matched to glass — seals that hold over decades, not just years
• EHigher strength-to-weight ratio — thinner frames, more glass, better sightlines
• IFactory ColorPlus finish — resists fading, chipping, and moisture absorption
• 120-year Marvin engineering pedigree behind every Infinity product

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