Trinsic Series windows with grids
Trinsic Series windows with grids


Grids can add that special touch to match a window or door to an architectural style, turning a large open pane into something extraordinary.

Get creative. Make it your own with grids. Imagine the morning sunlight gently entering a room. As the light warms your room, you notice a delightful mosaic of light and shadows reflecting on the wall—a reflection of the grid design you’ve chosen for your windows or patio door.

Door and window grids are a distinctive way to liven up the look of your home, whether you’re admiring it from the inside or out. Grids can make a window or door match a historical period or architectural style. They can also turn a large open pane into something extraordinary.

The types of door and window grids available to you will depend on the material of the door or window (i.e., vinyl, aluminum, fiberglass).  Grid options are based on where they’re placed on the pane - between the two panes of insulated glass or on the glass surface on both the interior and exterior.

window grids and door grids

Grids Between Glass

Door and window grids positioned between the panes make the window easiest to clean. You can choose between flat grids or sculptured grids.

Simulated Divided Lites

Traditional and historic divided lites were actually small panes of glass held by a grid frame. With simulated divided lites, the grids attach to the glass surface, both interior and exterior, with a spacer in between the glass to give your window and door a true traditional look.

For more information on availability by product line, please see Milgard Series product pages.

Check Rails

Check rails are the same material and application as grids, but it's simply a wider profile that simulates a sash and has no intersections.  This works well if you have a picture window between two single hung windows and want to keep the consistency of the horizontal sash line.

Grid Patterns and Combinations

Grids come in Standard, Valance and Perimeter styles in a seemingly endless array of combinations.

Standard Grids – also known as Colonial grids, these are the popular squares that work well in traditional or contemporary styles.  Standard grids can be used on the whole window or door, just on the top sash. You can also specify the number of lites across and up/down, depending on the size of the glass.


Valance Grids – Valance grids are similar to the Standard grids but are only across the top of the window or door. Like Standard grids, you can specify the number of lites across and the height. 


Perimeter Grids – For an attractive contemporary look, consider Perimeter grids which provide an outline on the perimeter of the glass with the grid intersecting in the corners.  Perimeter grids offer an even broader choice of patterns because you can specify a perimeter on each window, on just a sash or a perimeter across an array of windows and/or doors.  You can have the grid intersection only at the top or in all 4 corners.