![](http://www.alamy.com/thumbs/6/1F9370C3-5B0A-435B-A132-AC23BF04CCD5/2AMBWTT.jpg)
Diagram of a typical american brownstone townhouse with additional wall insulation and new Windows to improve energy efficiency of the building
Size: 4739px × 5000px
Photo credit: © Slavomir Valigursky / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: 3d, additional, apartment, architecture, brick, brownstone, building, concept, diagram, double, efficiency, energy, facade, fiberglass, foam, glass, glazed, glazing, home, house, housing, illustration, insulated, insulation, material, model, performance, perspective, polystyrene, property, pu-foam, renewal, residence, saving, styrofoam, thermal, triple, triple-pane, upgrade, vector, vectors, wall, window, windows