The original Narrow Line system for dual-insulated glazing and controlled opening sizes.
Narrow Line Tier I – LE was engineered by Synergy Group in 2019 as the original Narrow Line system. It was developed for projects requiring compact frame geometry, controlled sash proportions, and dual-insulated glazing within defined opening sizes.
- Dual-insulated glazing
- Controlled opening sizes
- Compact frame geometry
- Welded aluminum frame and sash assemblies
- Wood interior and exterior metal cladding options
Tier I – LE is the original Narrow Line window system and serves as the foundation of the Narrow Line Family. Designed with compact geometry, controlled opening sizes, and dual-insulated glazing, it delivers a clean architectural appearance with dependable thermal performance. Built using the original welded aluminum construction approach, Tier I – LE established the design language that continues to define the Narrow Line series today.
View our Narrow Line Tier II – XL if you need a larger scale, triple glazing, laminated glass, or side-mounted casement availability.
- Engineered for defined opening sizes with controlled sash proportions.
- Welded aluminum frame and sash assemblies for dimensional stability.
- Uninterrupted perimeter weather sealing for consistent air and water resistance.
- Compatible with a wide range of interior wood species and exterior metal cladding.
- Compact frame geometry suited for tighter wall conditions.
Use Tier I – LE for projects where the primary requirements are narrow sightlines, compact geometry, dual-insulated glazing, and defined casement or awning sizes.
- Custom residential windows with controlled opening sizes.
- Wood-aluminum applications requiring a narrow-profile system.
- Projects where compact frame geometry is important.
Tier I – LE System Overview
Controlled Geometry and Opening Sizes
Tier I – LE is suited to projects where the opening sizes are defined and the design intent calls for a controlled, compact profile.
The system keeps the Narrow Line visual language while supporting dual-insulated glazing and consistent weather sealing.
Material and Finish Direction
Tier I – LE supports interior wood species selection and exterior metal cladding options.
This allows the system to support traditional wood interior expectations while maintaining a durable metal exterior appearance.
Technical Summary
|
Tier name |
Narrow Line Tier I – LE |
|
Engineered |
2019 |
|
Construction |
Welded aluminum frame and sash assemblies |
|
Glazing |
Dual-insulated glazing |
|
Configurations |
Casement and awning |
|
Side-mounted casement |
Not available in Tier I |
|
All-aluminum |
Not available in Tier I |
|
Best suited for |
Controlled opening sizes, compact geometry, wood-interior applications, and standard Narrow Line proportions |
Contact Synergy Group to review whether Narrow Line Tier I – LE is the right fit for your opening sizes, glazing requirements, and material direction.