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Breathable Secondary Window Retrofit (SWR) System

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Easily Upgrade Non-Operable Windows from the Interior Without Replacement

Successfully Piloted at New York City High-Rises

Easily transform existing fixed windows from single to double-pane, or from double to triple-pane, without any removal or replacement.

Patent-Pending Interior Easy-Retrofit System

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Breathable

  • Uniquely engineered solution eliminates dust and heat build-up that could cause thermal stress, fogging and condensation

  • Installs quickly and cleanly from the interior without having to drill or alter any parts of the existing window system

Elegant

  • Ultra-slim profile maintains the daylight opening

  • Available in multiple color options to match the original framing

  • Tailored to the unique existing window conditions

2-10x added insulation 

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Up to 40% energy savings

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65%+ outside noise reduction

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Up to 10x Faster Payback than Replacement 

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