Window grids—also referred to as grilles or muntins—play a major role in defining the architectural style of a home. While their original purpose was structural, today grids are primarily a design feature that can dramatically impact curb appeal and interior aesthetics.
Whether you are replacing windows or designing a new build, understanding your grid pattern options will help you make a confident, long-term decision.
Window grids are the bars that divide a window into smaller sections, or “lites.” Modern windows offer grids in a variety of configurations, profiles, and finishes—allowing you to balance aesthetics, performance, and maintenance.
A clean, unobstructed glass pane maximizes natural light and outdoor views. No-grid windows are ideal for homeowners who want a modern look or want to highlight scenery.
Key benefits:
Clean, modern appearance
Maximum daylight and visibility
Simplest maintenance
Best for: Colonial, traditional, and historic-style homes
The Colonial grid pattern is symmetrical and evenly spaced—typically 6-over-6 or 9-over-9. This is one of the most classic and widely used grid styles.
Key benefits:
Timeless, traditional appeal
Strong curb appeal
Complements brick and siding exteriors
Best for: Craftsman, Prairie, and transitional homes
Prairie grids feature a clear center pane with grids only around the perimeter. This design provides visual interest without blocking views.
Key benefits:
Architectural detail with openness
Pairs well with Craftsman-style homes
Balanced blend of traditional and modern
Best for: Craftsman, bungalow, and cottage-style homes
Craftsman grids typically place multiple lites across the top sash with a single pane below. This design emphasizes horizontal lines and handcrafted character.
Key benefits:
Strong architectural identity
Popular for renovations and historic updates
Works well with wood and aluminum-clad windows
Best for: Tudor, European, and Old World-inspired homes
Diamond grids create a dramatic, decorative look. While less common, they add charm and historical character when used intentionally.
Key benefits:
Unique, high-end appearance
Ideal for accent windows
Enhances traditional architecture
Beyond pattern, how the grids are constructed matters:
Between-the-Glass (GBG): Grids are sealed between glass panes for easy cleaning and low maintenance.
Simulated Divided Lite (SDL): Grids are applied to the interior and exterior surfaces for a more authentic, architectural look.
True Divided Lite (TDL): Individual panes of glass—most authentic but typically higher cost and lower energy efficiency.
When selecting grid patterns, consider:
The architectural style of your home
Interior vs. exterior visual priorities
Maintenance preferences
Long-term resale value
In many cases, homeowners choose different grid styles for the front of the home versus the rear—maintaining curb appeal while maximizing views in living spaces.
Check the warranty offered by the manufacturer.
A good warranty can provide peace of mind and protection for your investment.
Window grids are more than a decorative detail—they are a design decision that impacts the overall character of your home. Whether you prefer clean, modern lines or classic architectural detail, the right grid pattern will enhance both form and function.
If you are unsure which option best fits your home, working with a window specialist can help you align aesthetics, performance, and budget.
