Ultra™ Series Windows

Beautiful and contemporary, these fiberglass windows are strong and built to last. Create the home of your dreams.

Ultra™ Series

The stunning look of a high performance window.

Ultra Series fiberglass picture windows and out-swing patio door
Ultra Series single hung windows in Bronze
Your style, envisioned.

If you can dream it, we can build it. Ultra Series is the ultimate, upscale fiberglass window that makes a visual impact. The fiberglass material resists swelling, rotting, and warping making it the perfect choice for long-lasting durability coupled with exceptional beauty.

Benefits of Ultra Series

  • Exterior Frame Colors
  • Durability and Energy Efficiency
  • Hardware
  • Full Lifetime Warranty
7 Exterior Frame Colors

Exterior Frame Colors
Looking for a dark interior frame to match the exterior? You’ll find it with Ultra Series fiberglass windows. Choose Bark or Black Bean to create the popular dark window frame look. We have a total of seven, beautiful exterior frame colors available. 

Durable and Energy Efficient

Durability and Energy Efficiency

Ultra Series custom fiberglass windows are heat and cold resistant, durable and low-maintenance. The frame expands and contracts at approximately the same rate as the insulated glass it holds, putting less stress on the seals for a clear view. Choose an energy package for your area and learn about ENERGY STAR®.


Milgard Ultra Series window hardware is attractive, durable, secure, and easy to operate. Available in white, clay, dark bronze, brushed chrome or black. Choose from the Positive Action Lock or optional Cam Lock for single hung or horizontal slider windows. Folding nesting operator handles are standard for casements and awnings.

Full Lifetime Warranty

Full Lifetime Warranty

Under the Full Lifetime Warranty, we will repair or replace any defect in materials or workmanship and will pay the costs of all parts and labor for as long as the purchaser owns their home. Glass Breakage Coverage included. The warranty extends for 10 years from the install date if the home is sold.

Ultra Series Operating Styles

  • Single Hung
  • Horizontal Slider
  • Casement
  • Awning
  • Picture
  • Radius
  • Bay & Bow
Ultra Series Single Hung Fiberglass Windows

Single Hung
Chose a single hung window for venting and daylight. The bottom sash is operable and opens by moving upward. Pulling downward closes and locks the window. Ultra Series fiberglass single hung windows have two choices for hardware: a Positive Action Lock or Cam Lock.

Ultra Series Horizontal Slider Fiberglass Windows

Horizontal Slider
Horizontal sliders are a common window style. Choose from a left or right side operable sash to allow airflow into any room. Ideal for windows facing a balcony or patio because they do not protrude toward the exterior of the home. Great for replacement window and new construction jobs.

Ultra Series Fiberglass Casement Windows

Choose a casement window for maximum ventilation in your home coupled with an unobstructed view. They hinge on the side and open just like a door. This fiberglass window style comes with a folding nesting handle set. 

Ultra Series Fiberglass Awning Windows

Looking for a window that opens at the top? Ultra Series fiberglass awning windows open outward with a top hinge that allows airflow but keeps the weather outside where it belongs. Awning windows come with a folding nesting operating handle.

Ultra Series Fiberglass Picture Window

Picture windows are the best way to frame a beautiful view. These inoperable fiberglass windows let in natural light and can be used in combination with operable windows if airflow is desired in a particular room. 

Ultra Series Fiberglass Radius Window

Ultra Series fiberglass radius windows come in operable or inoperable styles. What sets them apart is the curved feature, which can be a simple arched top or even a circular window shape. A beautiful and elegant option, radius windows can also have grids added. 

Ultra Series Fiberglass Bay and Bow windows

Bay and Bow
Bay fiberglass windows are three-segment units that expand your space to the outdoors. Bow fiberglass windows are four or more equal-width panels that create a dramatic, curved space in your home. Add operating styles for airflow in addition to daylight.

Our Window and Patio Door Experts are Here to Help!


Ultra™ Series Windows

See All Reviews
Ultra™ Series Windows is rated 3.7 out of 5 by 212.
Rated 5 out of 5 by from Amazing Door. This door is more solid that he solid door that we replaced. I didn't think that possible. We absolutely love it!! it looks perfect like it always belonged there. The added screen feature we are for sure going to love this summer! Everything came pre-installed, all we did was put it in the hole in the house, and poof it was perfect! My only problem was figuring out how to operate the handles. That was a learning curve, as we had no directions included with our door. When we figured this out, it was a very impressive door, with amazingly secure feel. Would order from Milgard over and over! Thanks!!!
Date published: 2012-02-27
Rated 3 out of 5 by from Look pretty good. Extremely poor craftsmanship. I ordered sliding window from ultra series for my bathroom, as an experiment, to see if I want to use this series around my house. Right now I am disappointed in the quality of the craftsmanship, however, overall appearance is quite nice. WO#396201.00 SO#2500054.014 Issues I found: 1. Silicone and glue is all over the place. Glass, frame, top, bottom. I spend half an hour cleaning it. Weather strip has silicon over it as well, it does not close gap properly anymore. 2. Plastic gazing beads at the bottom and not properly inserted and have gaps. No way to snap them in properly, since frame was not glued straight. 2. Window is not plumb. Panels have gaps, you can clearly see it was not inserted properly, the middle of the frame has 1/8 bow outward. 3. Roller marks between glass. I ordered etched glass, and it has vertical and horizontal 1 inch marks from some sort of roller. They are between the glass, so there is no way to clean it. 4. Sliding window does not slide well. Rollers are very cheap plastic wheels and it is extremely hard to roll. You have to use both of your hands and push with your whole body. 5. Wood jambs are poorly painted, in addition some paint was simply sanded. I have patches of sanded paint that I have to pain over. No point ordering pre-painted.
Date published: 2019-10-28
Rated 4 out of 5 by from Beautiful finish The double hung wood clad window I purchased is BEAUTIFUL it functioned amazing until the left window lift mechanism failed and now the window doesnt open smoothly and it makes a squealing noise upon opening and closing. The right side window is perfect
Date published: 2019-10-27
Rated 5 out of 5 by from Stunning views We are home remodelers & special ordered windows to maximize view to Sierras. The result is stunning. Easy to install & worth the investment. We will order again!
Date published: 2019-10-24
Rated 5 out of 5 by from I love the look I am really pleased with how the look. My house looks and feels so much better
Date published: 2019-10-21
Rated 5 out of 5 by from Nice windows Nice product. easy to install. Would like to see fold away nail fins, as that would make them easier to handle. One negative, the windows were well packaged, but upon removal of the packaging, i noticed the glass was filthy with rag wiped smears. I purchase a lot of windows and never had that in the past. I expect some sticker residue, but these were really bad.
Date published: 2019-10-16
Rated 3 out of 5 by from Windows perform good Fiberglass holds up better than Vinyl. The cons are that the windows are very thick, and the color fades over time. Get anodized aluminum or wood depending on the style of your home.
Date published: 2019-10-16
Rated 1 out of 5 by from Big problems with Milgard! We purchased 11 Milgard all fiberglass windows through Home Depot. The first problem arose when the order arrived from Milgard. 10 of the windows were correct---the last, was completely different than what we ordered. We sent it back and have been waiting for weeks for the replacement. It was supposed to have arrived today---but Home Depot just informed me that Milgard hasn't sent it out yet and it will take an additional week. Meanwhile, we're in the midst of a construction project that has been jammed up because of the missing window. If that was the worst of the problems it would be O.K.---- but it's not. Two of the single hung windows are literally falling apart. (and I imagine the other two single hung ones we ordered will soon follow) The windows were installed two days ago. The very first time we tried to open them the bar attached to the side of the windows to make them slide up and down (a really poor design!) just fell out. Trying to close them that night the upper part of the bottom sill (where the locking mechanism is) cracked because the window was out of alignment without the slide bar. I've written an email to Milgard but they have not responded. Incredibly shoddy windows---and apparently equally as shoddy customer service. I'll try going in to Home Depot to talk to their window department. The bottom sash's of these windows need to be replaced.
Date published: 2019-10-10
Rated 5 out of 5 by from Beautiful Smooth We just bought the house and the previous owners had installed these in the last few years. Fantastic!
Date published: 2019-10-04
Rated 5 out of 5 by from Excellent Large Living Room Casement Window In August 2019 we had a large Ultra casement window replace our original wood casement window in our living room. The new window with the new low-e glass is beautiful, offers excellent sunlight control and well made. This window has definitely made our home more enjoyable and attractive. The installation which is as important as the window hardware was conducted by Best Choice Home Improvements of Renton WA in a very competent manner with craftsmanship matching the Ultra window. Milgard produces an excellent window.
Date published: 2019-10-02
Rated 2 out of 5 by from A design flaw This door is your three panel design. With the screen installed, one can not utilize the extra width of opening both doors because the screen covers one side or the other of the doors. Your design does not allow you to move the screen out of the entrance yet there is a tract for the screen to run on. However there is a brace that keeps the screen from moving out of the way. The locking mechanism on the main door has bind when trying to unlock it.
Date published: 2019-09-24
Rated 5 out of 5 by from Beautiful addition to our home My wife and I are very impressed and surprised how much a diference adding new windows to our home has made. It added elegance and style, as well as made it quieter living for us.
Date published: 2019-09-18
Rated 4 out of 5 by from Nice hardware Just getting things installed. Love the multi-point hardware. Screens are touchy
Date published: 2019-09-09
Rated 5 out of 5 by from Great Looking Addition to my home I order my patio door from SCV Gassworks, and had them installed it a 2 weeks ago. The work done was professional and speedy, and the doors just beautiful after it was done. Thank You
Date published: 2019-09-06
Rated 5 out of 5 by from Beautiful windows Beautiful window, We ordered Milgard ultra windows, they were delivered quickly and look beautiful installed.
Date published: 2019-08-30
Rated 5 out of 5 by from Excellent windows and great install The windows look and perform wonderfully. Island Sash and Door did a great installation at a great price. Couldn't be more pleased.
Date published: 2019-08-21
Rated 3 out of 5 by from Good or average windows We replaced 20 plus windows, single hung sliders and big sliders. Windows so far (1 month) have boon okay but the screens are the worst screen I have seen on any window, including contractor grade! I have service scheduled for tomorrow will update if necessary.
Date published: 2019-08-21
Rated 1 out of 5 by from Do not buy I bought single hung windows as well as sliders and awnings. The single hung are s poorly made they have sagged so now I'm struggling to put trim around them. I have complained before but they always blame installation rather than admitting their products are awful. If you purchase windows you will be calling customer service which has a normal wait time of 20 to 30 minutes which speaks volumes itself. Also all units were delivered with dents and chips since they don't want to carefully pack the units.
Date published: 2019-08-15
Rated 5 out of 5 by from Excellent product ! We’ve had this for a month now and absolutely love these doors
Date published: 2019-08-13
Rated 5 out of 5 by from Look great I'm so glad they look similar to there replacement
Date published: 2019-07-27
Rated 1 out of 5 by from Terrible Customer Service Getting in touch with Milgard is a nightmare. No one calls back, phone calls get dropped, when you do speak with someone, they don't follow through. Incredibly frustrating.
Date published: 2019-07-22
Rated 5 out of 5 by from New face lift for my house! I love the new windows and customized beautiful front door. We get so many compliments. My home looks newer and fresher and feels cooler too. The only thing that I was disappointed was that my front door is a little smaller than normal but its gorgeous.
Date published: 2019-07-16
Rated 4 out of 5 by from Attractive, seems to be well made This window was installed yesterday and the sliding window on each side is "very" difficult to slide back and forth. Seems to be hung up on the felt strip. Once the windows are closed, it is difficult to open.
Date published: 2019-07-12
Rated 3 out of 5 by from Nine new nail on Ultra Good solid looking product, however, some initial build quality/install concerns. One of the new nine windows is missing screen pins and pin holes appear damaged prior to delivery. Three of the four slider windows with positive lock latches do not latch properly and don't appear to be adjustable. One of the sliders only has two glider wheels on the bottom of the sliding panel.
Date published: 2019-07-08
Rated 5 out of 5 by from Great door We purchased this door after the 1st one we ordered did not meet our expectations. The quality of this door is 100% better. Am so happy with the door. Installation, appearance and quality is wonderful. Would recommend this door to anyone.
Date published: 2019-06-22
Rated 5 out of 5 by from Awesome windows! We got triple pane windows for cold and noise. They work fantastically! Very happy with our purchase, and would recommend them to anyone looking for an affordable, solid window. The lifetime guarantee ensures we can trust the company to provide a reliable product!
Date published: 2019-06-17
Rated 2 out of 5 by from Ultra Series Patio Doors We bought these doors to replace metal clad wood core patio doors. We loved our metal doors but they were rusting on the edge so we decided to go with fiberglass. Disappointing when the installer had to make shift due to measurement errors by the dealer. We now have to refinish indoor trim which doesn't match our existing trim and is much wider. Trim also is not oak to match the remainder of our home. Also we need to do silicone plugs in our vinyl siding on the exterior where the nails damaged the siding. I don't know who is at fault--the dealer for measuring incorrectly or the installer. We also wanted satin nickel finish for the hardware but were told at the time of the order it's not available on this type so we had to choose brushed chrome. Disappointing given the price we paid.
Date published: 2019-06-15
Rated 1 out of 5 by from Un-freaking-believable! Just had my french doors installed today. I'm dumb founded that Milgard would even ship out a door of this quality. First thing first, the cuts on the door aren't even straight. It looks like it was chewed up by a dull saw. There's a good quarter of an inch gap at the top of the door because of the uneven cut. Second, the window trim wasn't installed correctly. Those, too, have a gap between pieces and very sharp edges sticking out. To top it off, the strike is not retracting... so here I sit in 99 degree weather with a door that I can't get closed because the tape that was used to hide the defect melted off. The installer says it's a manufacturer defect, so they can't help me. Would anyone mind telling me how I'm supposed to secure my house tonight??? We thoroughly enjoyed spending 30 minutes cleaning off all the glue too... so thanks for that! I did not work this hard and spend thousands of dollars to have a door installed that's nearly in as bad of shape as the one I replaced. I certainly hope you plan to make this right!!!
Date published: 2019-06-06
Rated 5 out of 5 by from Solid Door Removed old door and Installed new door in approximately 4 hours. Solid door was easy to install for my wife and I. Fiberglass frame that had small scratches from shipment, nothing too large, just wondering if there is a paint color code or name that I can use to cover scratches?
Date published: 2019-05-29
Rated 4 out of 5 by from Good looking windows, service less than ideal The black fiberglass windows look great, and I believe they will be great for insulation. However, when purchased, the wrong color latches and strike plates were installed, and we're still waiting for the correct color strike plates 3 months later.
Date published: 2019-05-22
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