Indow Windows has a decidedly low-tech alternative for creating a more energy efficient home: custom window inserts that are just as efficient as double-pane windows but at one-fifth the cost, says founder Sam Pardue (a bit of trivia: he's also one of the Lensbaby cofounders). Essentially an acrylic panel wrapped in a compression tube, the window fits pops into the interior of an existing window, forming an air-tight seal.  Highlights from Greenbuild 2012 by Diana Budds

Highlights from Greenbuild 2012

Indow Windows has a decidedly low-tech alternative for creating a more energy efficient home: custom window inserts that are just as efficient as double-pane windows but at one-fifth the cost, says founder Sam Pardue (a bit of trivia: he's also one of the Lensbaby cofounders). Essentially an acrylic panel wrapped in a compression tube, the window fits pops into the interior of an existing window, forming an air-tight seal.

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