An expanded Narrow Line system for larger openings, increased sash dimensions, and higher glazing capacity.
Narrow Line Tier II – XL was engineered by Synergy Group in 2021 to extend the Narrow Line family for projects requiring increased scale and glazing capacity. It maintains the Narrow Line construction approach while adding deeper frame geometry, enhanced sash construction, and support for larger and higher-performance glazing assemblies.
- Increased sash dimensions
- Triple-insulated glazing assemblies
- Laminated and high-performance glazing options
- Larger opening compatibility
- Alternative metal cladding options
- Side-mounted casement availability
Tier II – XL expands on the Narrow Line design with larger sash dimensions, increased glazing capacity, and enhanced performance capabilities. Designed for larger openings, it accommodates triple-insulated glazing and laminated glass options while maintaining the clean, refined aesthetic of the Narrow Line family. Where applicable, Tier II – XL can also support side-mounted casement configurations, providing greater design flexibility without compromising performance or appearance.
View our Tier III – Heritage XL for projects requiring heritage proportions, custom SDL replication, or traditional appearance at larger sizes.
View our Tier IV – All-Aluminum XL for projects requiring all-aluminum construction.
- Engineered to support increased sash dimensions.
- Configured for triple-insulated glazing assemblies.
- Enhanced sash construction for higher sash weights.
- Deeper frame geometry to accommodate larger glazing units.
- Welded frame and enhanced welded sash assemblies.
- Supports laminated and high-performance glazing options.
- Compatible with larger openings.
- Designed for uninterrupted perimeter weather sealing.
- Available with alternative metal cladding options including bronze, copper, and stainless steel.
Use Tier II – XL for larger wood-aluminum Narrow Line applications where increased glazing capacity, larger openings, and stronger performance options are required.
- Large-scale custom residential work.
- Contemporary projects requiring narrow sightlines and larger glass units.
- Projects requiring triple-insulated glazing or laminated glass.
- Casements that extend down to finished floor level where side-mounted operation is needed.
Built for Larger Narrow Line Applications
Tier II – XL extends the Narrow Line system for projects that require increased opening sizes and greater glazing capacity while preserving the controlled sightline and welded construction approach of the Narrow Line family.
Triple Glazing and Laminated Glass Support
Tier II – XL supports triple-insulated glazing assemblies, laminated glass, and other high-performance glazing options. This makes it suitable for projects where scale, performance, and narrow architectural proportions need to work together.
Alternative Metal Cladding
Tier II – XL can be specified with aluminum or alternative metal cladding options, including bronze, copper, stainless steel, and other specialty metals. This allows the exterior material selection to respond to the architectural intent of the project.
Tier II – XL is available as a side-mounted casement configuration for casements that extend down to finished floor level. This allows the operating hardware to be positioned at a more practical reach height while maintaining tall, clean casement proportions.
Technical Summary
|
Tier name |
Narrow Line Tier II – XL |
|
Engineered |
2021 |
|
Construction |
Welded frame and enhanced welded sash assemblies |
|
Glazing |
Dual-insulated glazing; triple-insulated glazing; laminated glass; high-performance glazing options |
|
Configurations |
Casement and awning |
|
Side-mounted casement |
Available |
|
All-aluminum |
No. Use Tier IV for all-aluminum construction. |
|
Best suited for |
Increased scale, larger sash dimensions, greater glazing capacity, and side-mounted casement applications |
Contact Synergy Group to review whether Narrow Line Tier II – XL is the right fit for your larger openings, glazing package, material cladding, and side-mounted operation requirements.