Detail That Defines Your Design

Grills, also known as muntins, simulated divided lites (SDLs), or internal dividers, add architectural character and visual structure to your commercial windows. At Centennial Glass, we install, repair, and match window grills for sealed units, storefronts, ribbon windows, and more—enhancing your building’s design without compromising performance.

Whether you’re recreating a heritage look, coordinating with adjacent buildings, or simply adding definition to your façade, we help you select and integrate grill designs that match your aesthetic, frame system, and thermal goals.

Need to match grills on a window replacement or new project?

Get A Quick Quote5

Call Us: 613-738-95005

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What Are Window Grills?

Window grills are decorative or functional elements that divide a window into smaller visual sections. In commercial applications, they are often used to:

Reproduce traditional or colonial architectural styles
Break up large expanses of glazing for visual balance
Coordinate with nearby properties or zoning requirements
Add depth, symmetry, and shadow lines to a façade

Grills may be applied to the surface (SDLs), installed between panes in an IGU (internal grills), or fully divided with individual lites (TDLs) in heritage settings.

Installing new IGUs and want grills inside the unit?

Learn more on our Sealed Units (IGUs)

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Grill Installation, Matching & Repair

Centennial Glass provides both grill specification for new builds and exact-match replacements for failed or outdated glass panels with grills. We work with storefronts, punch windows, vestibules, and curtain wall panels.

We handle:

Matching internal grill color, profile, and configuration
Surface-applied SDLs for new or retrofit IGUs
Grill alignment for multi-panel systems and façades
Resealing or reglazing units with faded or damaged grills
Decorative or custom grill patterns for brand-aligned spaces

Replacing fogged glass or broken panels with grills?

Visit our Commercial Window Repair

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Applications for Commercial Window Grills

We install and restore grills in a wide variety of commercial environments, including:

Offices and mixed-use developments
Schools, universities, and institutional buildings
Government and municipal buildings
Healthcare and wellness centers
Retail storefronts and hospitality venues
Heritage restorations and zoning-controlled façades

Grills are often used to preserve historic visuals in adaptive reuse buildings or to bring human scale to large glass installations in urban and suburban developments.

Also working on historic or segmented façades?

Explore Punch Windows

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Grill Options & Profiles

We offer a variety of grill styles, colors, and materials to align with your project’s design goals:

Internal grills (in sealed units) – maintenance-free, energy-efficient
Simulated Divided Lites (SDLs) – surface-mounted for depth and realism
Colonial, Prairie, Ladder, and Custom Patterns
Flat, pencil, or contour profiles
Grill-in-glass spacers and warm-edge compatibility

Our team ensures that every grill system aligns with your unit’s spacer thickness, tint, and coating for flawless appearance and performance.

Why Centennial Glass?

Decades of experience with custom commercial window fabrication
Exact-matching for restoration and reglazing projects
Seamless integration with IGUs, thermopane, and tinted glass
Installed by certified, detail-focused commercial glaziers
Full design support, from concept through installation

Need help choosing the right grill profile for your façade?

Get A Quick Quote5

Call Us: 613-738-95005

Windows

Films & Treatments

Glass Types

Repair

Fabrication

Let the Details Do the Talking

Window grills may be subtle, but they make a big impact on your building’s character. Let Centennial Glass help you design, replace, or replicate grill patterns that bring architectural balance and timeless style to your commercial windows.