# Indow: Building Materials, Portland, United States

> Indow: Indow's custom window inserts simply press inside existing window frames to make old double-panes perform like new for a fraction of the cost.

Source: https://millionrounds.com/startup/indow (Millionrounds; every figure on the page links to its filing or article)

United States · [Building Materials startup](https://millionrounds.com/companies)

# Indow

Indow's custom window inserts simply press inside existing window frames to make old double-panes perform like new for a fraction of the cost.

Email

Funding reported Last round: Convertible note

Building Materials Portland, United States

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Company summary

- **Founded:** 2010 16 years old
- **Team:** 40 11 to 50 people
- **Funding reported:** $5.6M in dollars
- **Last round:** Convertible note Jun 2016

How sure we are

- ✓ **Listed** We know it exists and what it does
- 2 **Funding reported** A company dataset reports a raise
- 3 **Observed** A filing or a dated announcement confirms a round

No round for Indow has been confirmed by a filing or an announcement yet, so nothing here counts toward an investor's record. [How we decide](https://millionrounds.com/methodology)

## About Indow

Indow's custom window inserts simply press inside existing window frames to make old double-panes perform like new for a fraction of the cost.

Indow inserts do not require an internal mounting bracket and have a low profile design that almost disappears when installed. They block cold drafts and hot summer air, reduce energy bills and quiet outside noise coming through windows. Indow inserts are easy to install and remove and do not damage existing windows.

## What company datasets say Indow raised

Funding, as reported

Reported in all **$5.6M** in dollars

Rounds **4**

Last round **Convertible note**

Last round date **Jun 2016**

## On a portfolio page

Investors who name them

- [Portland Seed Fund](https://millionrounds.com/fund/portland-seed-fund)

Each firm lists Indow on its own website. That is the firm's claim, a weaker thing than a round we watched, but a named source.

## Building Materials in United States

Startups like it

- [**84 Lumber** Eighty Four · founded 1956](https://millionrounds.com/startup/84-lumber)
- [**Solidia Technologies** San Antonio · founded 2008](https://millionrounds.com/startup/solidia-technologies)
- [**Project Frog** San Francisco · founded 2006](https://millionrounds.com/startup/project-frog)
- [**Next Energy Technologies** Santa Barbara · founded 2010](https://millionrounds.com/startup/next-energy-technologies)
- [**SAGE Electrochromics** Faribault · founded 1989](https://millionrounds.com/startup/sage-electrochromics)
- [**Oberfields** Delaware · founded 1961](https://millionrounds.com/startup/oberfields)
- [**Artaic** Boston · founded 2007](https://millionrounds.com/startup/artaic)
- [**Resysta** Chino · founded 1996](https://millionrounds.com/startup/resysta)

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