http://energystar.gov ENERGY STAR is a joint program of the U.S Environmental Protection Agency and the U.S. Department of Energy helping us all save money and protect the environment through the energy efficient products and practices.

http://www.royalgrouptech.com Royal Group Technologies is one of North America's largest vinyl extruders. Their premium vinyl extrusion and injection moulded products meet or exceed AAMA requirements, resist fading and will not peel, rust, flake or corrode, providing virtually maintenance free protection. The Royal Dura Technology Brand offers homeowners windows and doors with long lasting beauty by providing polymer components that feature: reliability, performance, and beauty. 

http://www.cardinalcorp.com Supplier of Cardinal LoE-366 glass. LoE-366 adds a third layer of silver coating. Result: a clear coating that blocks even more solar gain, reflects heat and lets the light stream in.

http://envirosealedwindows.com/Supplier of Dura Platform spacers. Envirosealed Windows with Dura Platform spacers efficiently insulate your home, greatly reducing energy consumption, saving you up to $205 a year in energy costs when compared to other spacers.

http://nfrc.org The NFRC is a non-profit organization that administers the only uniform, independent rating and labeling system for the energy performance of windows, doors, skylights, and attachment products.

http://aamanet.org AAMA is the source of performance standards, product certification and educational programs for the fenestration industry. The AAMA Certification Label that appears on the majority of residential windows means that a sample of the product has tested and comforms to performance standards for air and water infiltration at the specified pressures, structural integrity, and resistance to forced entry.

http://www.cslb.ca.gov The Contractor's State License Board (CSLB) protects consumers by licensing and regulating California's construction industry

http://www.la.bbb.org The Better Business Bureau issues reports on all businesses, whether or not they are a BBB member. If a business is a BBB member, the BBB torch will be displayed on the left in the search results.