Exterior Interior
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A250 Thermally Improved Aluminum Windows
Horizontal Sliding Windows

Material
Aluminum
Price point
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Project type
Replacement, New Construction

Horizontal sliding windows are one of the most common aluminum window styles seen in homes today. With A250 Thermally Improved Aluminum, you can select which side opens, either left or right. The spring action lock lets you easily see if your window is closed and locked.

Design Options

FRAME COLORS

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Interior
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Interior
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Exterior
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Exterior

Interior frame color

Clean anodized
Clear Anodized
Bronze anodized
Bronze Anodized

Exterior frame color

Clean anodized
Clear Anodized
Bronze anodized
Bronze Anodized

Finish options may vary by location. 
Colors shown are approximate. Visit your local Milgard Dealer for more information and to see accurate finish samples. 

GLASS OPTIONS

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Solar Bronze Tinted Glass
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Solar Gray Tinted Glass
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Aquatex Obscure Glass Option
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Glue Chip Obscure Glass Option
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Standard
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Milgard SunCoat® Low-E2 Glass comes standard on all dual-pane windows and patio doors.

Tinted glass options

Cardinal Low-E
Solar Bronze Tinted Glass
Solar Bronze
Solar Gray Tinted Glass
Solar Gray

Obscure glass options

#42 Clear
Aquatex Obscure Glass Option
Aquatex
Delta Frost
Frosted Glue Chip
Glue Chip
Satin Etch
Narrow Reed
P516
Rain

GRIDS

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Flat Grid

Grid is located between the glass.

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Sculptured Grid

Grid style

Express your creativity and increase your home's curb appeal with a variety of grid options.

Grid style

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Flat Grid
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Sculptured Grid

Grid pattern

The grid patterns shown below are common configurations, however we can accommodate nearly any desired grid pattern.

Grid pattern

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Standard
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Standard Half
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Valance
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Perimeter Pane
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Perimeter Corner

HARDWARE

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A250 Spring Action Lock

A250 Thermally Improved Aluminum horizontal slider windows come equipped with a spring action lock. The hardware color will complement the frame color selection. 

Our Experts are Here to Help! 

Thermally Improved Aluminum

Milgard A250 Thermally Improved Aluminum windows offer a polyurethane channel to reduce heat transfer and improve energy efficiency for a more comfortable home no matter the weather.

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A250 Thermally Improved Aluminum

Technical Resources

All Resources

A250 Series Thermally Improved Aluminum STC Ratings
A250 Thermally Improved Aluminum FC Clear Opening/Egress Chart
A250 Thermally Improved Aluminum Thermal Ratings
Fastener Schedule
MITER Brands Field Testing Policy
Thermally Improved Aluminum 3-Part Specification
Thermally Improved Aluminum Performance Ratings
A250 Aluminum Horizontal Slider Block Frame
A250 HV Clear opening/Egress Chart
A250 Thermally Improved Aluminum Aluminum Half Vent Below Window 1 5/16" Nailfin Setback
A250 Thermally Improved Aluminum Double Vent - 1-5/16" Setback
A250 Thermally Improved Aluminum Horizontal Slider - 1-5/16" Setback
A250 Thermally Improved Aluminum Horizontal Slider Above - 1-5/16" Setback
Reviews
Horizontal Sliding Windows