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National Fenestration Rating Council (NFRC) - Sustainable Design Group Inc. - Think Energy, Inc. -
National Fenestration Rating Council (NFRC) is a non-profit, public/private organization created by the window, door and skylight industry. It is comprised of manufacturers, suppliers, builders, architects and designers, specifiers, code officials, utilities and government agencies. NFRC provides consistent ratings on window, door and skylight products. NFRC's primary goal is to provide accurate information to measure and compare the energy performance of window, door, or skylight products.
Sustainable Design Group Inc.- Business type: Home design
- Product types: solar hot water, solar PV, wind, earth brick, passive solar, composting toilets, non toxic materials, geothermal, rain water collection and more..
- Service types: Green, Solar and Zero Energy home design and project management
- Address: 22923 Wildcat Rd., Gaithersburg, Maryland USA 20882
- Telephone: 301-428-1040
Think Energy, Inc.- Product types: photovoltaic cells, alternative homes and buildings, backup power systems, energy efficient homes and buildings, on site generation.
- Service types: consulting
- Address: 82 Eldrid Drive, Silver Spring, Maryland USA 20904
- Telephone: 301-625-2590
- FAX: 301-625-2591
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