Interior Retrofit Window Systems

edi is a specialty manufacturer of interior window systems for architectually significent window retrofit projects. edi custom windows will maintain the traditional appearance of the original window, while achieving the modern energy standard required today.

Prime/plus Concept

The prime window functions as a storm window, while edi becomes the new prime window on the inside.

Prime/plus Concept


edi PRIME/plus concept is an interior window working in tandem with the original prime window. The resulting window system becomes thermally broken and double glazed. The cost and job problems associated with the obtaining high architectural standards thru window replacement may now be avoided. Likewise, by mounting to the inside, aesthetic difficulties common with exterior storms are circumvented.

Historic Preservation

With more architectural emphasis being placed on the proper planning and treatment of historically significant buildings, edi Window Systems specializes in concept, design and specifications for each aspect of any historic preservation project. While architects and preservation groups are becoming more concerned with preserving the original windows, edi becomes the quality solution to window retrofit planning. Such features as our low profile framing and customizing sightlines allow edi to meet stringent historic requirements, while still being undetected from the exterior. For interior considerations, special paint finishes are available upon request.

Custom Engineering & Specialty Bending

edi products may be custom engineered and designed to cover openeings of virtually any size or shape. An interior window must be extremely flexible in its engineering capacities to accomodate the thousands of different window designs and shapes present in our country's architecture. edi will design a window to meet your needs. Custom shapes such as gothis or arched heads, whether operable of fixed, can easily be installed.

Designed For Maintenance

All edi Windows are designed to compliment the existing window for aesthetics and natural ventilation requirements. We'll ensure easy access to both inner and outer windows for cleaning and maintenance purposes. All inserts, regardless of size or series, are easily removable, requiring no storage.


Special Services

Free, prompt consultation services for any phase of project development

Custom engineering and design at no additional cost

Budgetary pricing and energy analysis

Feasibility studies for the various options available

On-site consultation by factory representatives available

Optional Accessories

Special Paint colors

Custodial locks

Sill rollers for ease of operation

Aluminum mesh insect screens

Glazing options

- 1/8, 3/16, 1/4 in. float or tempered glass

- Polycarbonates

- Insulated panels

- New Low "E" glazing for increased energy performance

Special Features

Specialty engineered curves and gothic shapes

Custom extrusions

Expander system designed to accomodate existing conditions


- Q-LonĀ® weatherseal, the tested leader for air infiltration, thermal variance, and acoustics

- Gaskets and airseals used throughout for air tight construction

1000 | 2000 SERIES

1100 | 2100 SERIES

1200 | 2200 SERIES



Technical Data and Short Form Architectural Data

Contact edi


3 Alice Street
Binghamton, NY 13904

Phone: 607.729.9131 or 800.462.6088
Fax: 607.772.1855