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Indow logo


Indow window inserts press inside window frames with no mounting bracket to block drafts 100% and reduce noise 70% while lowering energy loss by two thirds.

  • Stage $5M in TTM Revenue
  • Industry Clean Technology
  • Location Portland, OR, USA
  • Currency USD
  • Founded March 2009
  • Employees 40
  • Incorporation Type C-corp
  • Website indowwindows.com

Company Summary

Indow manufactures and sells attractive, patented, interior window inserts which press inside window frames with no mounting bracket to block drafts 100% and reduce noise up to 70% while lowering energy bills up to 20%. We sell direct and through a dealer network to both residential and commercial customers. The company is poised for accelerated growth via a new generation of products ready for ecommerce and highly scalable dealer sales.


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    Stuart Rosenfeld
    VP of Finance

    20+ Years Finance and Operations
    Zig Zag Wireless, Daverci, Sequent (IBM), Chevron
    BA Finance, University of Washington

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    Russell Eisenberg
    VP of Sales

    Sustainable Flooring Solutions, Sales Mgr, GM; K-Designers Home Remodeling, Marketing Director.

  • Lensbaby, Co-Founder & CEO
    Intel, Marketing Manager
    MBA, Carnegie Mellon

  • 59ab77e8 4f77 4947 9a5c ff2f9abdf78c
    VP of Marketing

    Formerly with XZERES Corp, BA, Elon University

  • F5c2be2c b830 475f 8625 058375e9a26d
    Director of R&D, Quality

    Formerly with Plastimayd, where he invented a photo based dimensional measuring system.


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    Liz Kraus, Immix Law
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    Sean O'Brien, Miller Nash (IP)
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    Blake Seabaugh

Previous Investors

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    Vision Ridge Partners
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    NW Energy Angels
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    Portland Seed Fund
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