Thermally Improved Aluminum | A250 Horizontal Slider Windows

Horizontal Slider windows open with the sash sliding left or right.

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Milgard Thermally Improved Aluminum windows can create a contemporary, yet timeless look in your home. The frame material is very strong, and offers:

  • Narrow sightlines to highlight expansive views
  • Sealed, mechanically-joined corners that stay square and true over time
  • Milgard SunCoat® Low E glass for energy efficiency
  • Thermally Improved Aluminum provides less heat/cold transfer, improving insulating ability
  • The Milgard Lifetime Limited Warranty for peace of mind
Preview Interior Frame in Clear Anodized
Preview Interior Frame in Bronze Anodized
Preview Exterior Frame in Clear Anodized
Preview Exterior Frame in Bronze Anodized
Interior
Clear Anodized
Bronze
Bronze Anodized
Exterior
Clear Anodized
Bronze
Bronze Anodized

Interior and Exterior colors must match.

Preview Hardware item in Spring Action Lock
Spring Action Lock

Hardware finish will match frame color.

Preview Grid item in Flat Grid
Preview Grid item in Sculptured Grid
Flat Grid
Sculptured Grid
Preview obscure Glass in Aquatex
Preview obscure Glass in Clear 42
Preview obscure Glass in Delta Frost
Preview obscure Glass in Frosted Glue Chip
Preview obscure Glass in Glue Chip
Preview obscure Glass in Matelux
Preview obscure Glass in Narrow Reed
Preview obscure Glass in P516
Preview obscure Glass in Rain
Preview tinted Glass in Cardinal Low-E
Preview tinted Glass in Solar Bronze
Preview tinted Glass in Solar Gray
obscure
Aquatex
Clear 42
Delta Frost
Frosted Glue Chip
Glue Chip
Matelux
Narrow Reed
P516
Rain
tinted
Cardinal Low-E
Solar Bronze
Solar Gray
Preview Screen item in Standard Mesh
Standard Mesh

Technical Resources

Thermally Improved Aluminum | A250 Horizontal Slider Windows Technical Resources

You can also search our full Technical Resource Library for more Product Series and Operating Styles.

Thermally Improved Aluminum STC Ratings
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Thermally Improved Aluminum Horizontal Slider - 1-5/16" Setback
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    Thermally Improved Aluminum Double Vent - 1-5/16" Setback
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    Thermally Improved Aluminum Horizontal Slider Above - 1-5/16" Setback
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    Thermally Improved Aluminum Performance Ratings
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    Thermally Improved Aluminum Full Architectural Manual
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    Architectural Manuals
    Thermally Improved Aluminum Horizontal Slider Architectural Manual
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    Architectural Manuals

    Reviews

    Thermally Improved Aluminum | A250 Horizontal Slider Windows

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    Thermally Improved Aluminum | A250 Horizontal Slider Windows is rated 3.8 out of 5 by 391.
    Rated 5 out of 5 by from Great looking windows Just installed four windows and they look great! Much easier to install than I expected. Will order some more to complete my project.
    Date published: 2019-07-30
    Rated 5 out of 5 by from Beautiful look Our contractor suggested using these windows for our bathroom remodel. We absolutely love the look it provides. Very pleased.
    Date published: 2019-06-25
    Rated 5 out of 5 by from Do it, you won’t be disappointed! I have lived in my condo for 27 years, and the windows were old when I moved in. Finally decided to get new ones, and I highly recommend the Milgard windows. They work beautifully, are well constructed, and I’m not afraid that they’re going to fall out if I try to take them out to clean them. What a difference clean windows and screens make. Very satisfied customer.
    Date published: 2019-06-23
    Rated 5 out of 5 by from Milgard had exactly what we wanted Of all the choices of replacement sliding door companies, Milgard was the only one that had exactly what we were looking for, aluminum bronze, to match our windows. The pricing was fair and the install excellent. A great team of installers did a superb job. Very happy with the results.
    Date published: 2018-01-09
    Rated 5 out of 5 by from Exactly what we were looking for 1960's Eichler style home with aluminum sliding doors, needed replaced along with 9 pieces of frameless full-hgt. glass units. Doors worked perfectly style-wise, ease and quietness of operation is a plus. Retained look of home, noticeable change in keeping cold out.
    Date published: 2013-11-14
    Rated 2 out of 5 by from A250 Aluminum Series is Disappointing I had planned for years to replace the single pane windows in my 1983 home. I was looking forward to a refreshed look and feel. It took 20-weeks for the aluminum A250 series from time of order to day of installation. The windows arrived with a gooey substance on the inside tracks and exposed miter edges of the frames. This allowed metal shavings of the installation screws to stick into the corners and hard set immediately. Three out of six windows require special handling, or force to operate. One window has a spring so tight I think it's going pop when I attempt to open the window. The window contractor has cleaned out the metal shavings, cleaned all of the goo left in manufacturing, and attempted to adjust the windows for ease of operation. I'm surprised at the amount of space their is between the glass frame and window frame. It's unclear how these can be energy efficient. The only way to say this is; the Milgard A250 series windows have a discount feel to them. Milgard's other window series may be better.
    Date published: 2022-09-28
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