NSI Windows & Doors represent only the finest names in the window and door industry on the market today. Our goal is to bring you the right products at the right price while providing you with SUPERIOR INSTALLATION & SERVICE.



Manufacturing in Florida and distributing to customers and families around the world, we are proud to serve your building needs with Clear purpose.


CGI Windows & Doors is the premier manufacturer of hurricane impact resistant windows and doors.

Produced to the most exacting industry standards, our high performance, high aesthetic product collections offer advanced hurricane protection of home and commercial structures, in both new and existing construction.


Our craftsmanship, attention to detail, and ultra-high-performance ratings have made WinDoor the product of choice for five-star resorts, luxury high-rise condominiums, and celebrity mansions along the US coastline for over 15 years.

Custom Window Systems, Inc.

Custom Window Systems, Inc. (CWS) has been in business since 1986 and prides itself in producing high quality, American Made window and door products for both residential and commercial use. Our manufacturing plant and general offices are located in Ocala, Florida where we occupy a 225,000 sq. ft. facility built to our specifications in 2006. CWS produces both vinyl and aluminum window and door products which are distributed throughout the Southeastern part of the country.

Eastern Architectural Systems

Eastern Architectural Systems (EAS) provides a complete line of custom-made windows & doors: aluminum and vinyl, impact and insulated impact. Tested for strength and integrity, and built with style in mind, EAS windows and doors exceed the requirements and challenges of today’s discerning buyer.


JELD-WEN founded in 1960, is one of the world’s largest door and window manufacturers, operating 117 manufacturing facilities in 19 countries located primarily in North America, Europe and Australia. Headquartered in Charlotte, North Carolina, JELD-WEN designs, produces and distributes an extensive range of interior and exterior doors, wood, vinyl and aluminum windows and related products for use in the new construction and repair and remodeling of residential homes and non-residential buildings. JELD-WEN is a recognized leader in manufacturing energy-efficient products.


Euro-Wall manufactures folding, sliding and stacking door systems that are elegantly classic and also provide unsurpassed performance. Euro-Wall door systems feature the industry’s largest panel opening heights and widths in almost every category which operate with ease. Euro-Wall’s architectural grade door systems provide both impact rated and thermally broken options to outperform in coastal and other weather challenged climates.





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