Style Line® Series Radius Window

Arch and radius windows can be operable to let in fresh air or fixed to only let in light.

Request a Brochure

Style Line Series vinyl radius windows
  • Features
  • Colors
  • Styles
  • Grids
  • Glass
  • Combinations
  • Technical Resources

The clean lines of our Style Line Series can help refresh and renew your space and allow you to enjoy your view. Style Line Series offers:

  • The Milgard signature vinyl formula crafted for superior results
  • A Positive ActionTM Lock, on sliders and single hung windows, to open and close the window with one motion
  • The Milgard Full Lifetime Warranty for peace of mind
Preview Interior Frame in White
Preview Interior Frame in Tan
Preview Interior Frame in Clay*
Preview Exterior Frame in White
Preview Exterior Frame in Tan
Preview Exterior Frame in Clay*
Preview Exterior Frame in Sand [Premium]
Preview Exterior Frame in Ivory [Premium]
Preview Exterior Frame in Fog [Premium]
Preview Exterior Frame in Silver [Premium]
Preview Exterior Frame in Tweed [Premium]
Preview Exterior Frame in Classic Brown [Premium]
Preview Exterior Frame in Espresso [Premium]
Preview Exterior Frame in Bronze [Premium]
Sand [Premium]
Ivory [Premium]
Fog [Premium]
Silver [Premium]
Tweed [Premium]
Classic Brown [Premium]
Espresso [Premium]
Bronze [Premium]

*Clay is not available in all locations.

All windows with Milgard Premium Exterior Vinyl Finishes have a white interior. Exterior Standard colors are available with matching white, tan or clay interiors. 


Preview Hardware item in Arch Top
Preview Hardware item in Round
Preview Hardware item in Half Round
Preview Hardware item in Quarter Round
Arch Top
Half Round
Quarter Round

Ask your Milgard Dealer about all the radius window shapes available.

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 Cross Reed
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 Azurelite
Preview tinted Glass in Cardinal Low-E
Preview tinted Glass in Evergreen
Preview tinted Glass in Solar Bronze
Preview tinted Glass in Solar Gray
Clear 42
Cross Reed
Delta Frost
Frosted Glue Chip
Glue Chip
Narrow Reed
Cardinal Low-E
Solar Bronze
Solar Gray
Preview Screen item in Arched window over horizontal slider
Preview Screen item in Arched window over awning
Arched window over horizontal slider
Arched window over awning

There are so many options when it comes to radius windows. This specialty shape comes in circular, half circle, quarter circle or arched top styles. This is a great way to add a charming focal point to a room, while also letting in additional daylight, or ventilation.

Technical Resources

Style Line® Series Radius Window Technical Resources

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

AAMA 2400-10 Installation Instructions
File type(s):
Installation Instructions
AAMA 2410-13 Installation Instructions
File type(s):
Installation Instructions
Installation Supplement
File type(s):
Installation Instructions
Stucco Tape Guidelines
File type(s):
Installation Instructions
Style Line Series 3 Part Specifications
File type(s):
Technical Documents
Style Line Series Performance Ratings
File type(s):
Ratings Data
Style Line Series STC Ratings
File type(s):
Ratings Data


Style Line® Series Radius Window

See All Reviews
Style Line® Series Radius Window is rated 4.4 out of 5 by 537.
Rated 5 out of 5 by from Vastly improved airflow and appearance We had three windows installed on our ocean-facing wall, including a clerestory awning type which can be left open on warm, rainy days. They are beautiful.
Date published: 2019-02-17
Rated 5 out of 5 by from Have milguard window alteadu They are a big improvement on old windows They are attractive
Date published: 2019-02-14
Rated 5 out of 5 by from Very Good Windows Very nice looking windows and are energy efficient. I've only lived here for about 2 1/2 months. The windows were installed in the Condo I purchased. At this point I am very satisfied with these windows.
Date published: 2019-02-13
Rated 5 out of 5 by from Windows are exceptional quality My Windows were installed last week and are a great addition to my home.
Date published: 2019-02-12
Rated 5 out of 5 by from Easy Handle I purchased three windows with a sliding patio door with which I am extremely delighted. My door and windows are all over sized but with these items there're easy to open and lock. The both have enhanced the look of my home.
Date published: 2019-02-11
Rated 5 out of 5 by from Just in time for snow I have had the windows for only a week or two, but the difference in the even heat is very noticeable. The furnace is not turning on as often and I know this translates into utility savings. The workers were polite and left the house; inside and out in great shape. Thanks for a great job.
Date published: 2019-02-07
Rated 5 out of 5 by from Nice looking Today they installed my windows and sliding door and they look very elegant and I hope they last me all my life
Date published: 2019-02-06
Rated 5 out of 5 by from Great quality, and service from Pelican Pelican Windows did a great job and windows are super. Milgard warranty is important
Date published: 2019-02-04
Rated 5 out of 5 by from Great windows New construction it beautiful rural area with mountain views and lots of southern sun exposure. The Milgard windows we selected meet all of our expections. Couldn't be happier.
Date published: 2019-02-04
Rated 5 out of 5 by from Big improvement The very next morning I noticed the difference in the rooms that they were installed in, they were much warmer. I can tell that they will save me money in heating costs.
Date published: 2019-01-27
Rated 5 out of 5 by from Affordable, efficient, and beautiful! Purchased eight replacement windows, six single-hung and two casement, for a very old building. Interior climate control and exterior curb appeal immediately improved exponentially!
Date published: 2019-01-21
Rated 5 out of 5 by from Quality and Service I am always pleased with the product and the service. I have slowly replaced almost all the windows in our house, couple more to go, and have no complaints what so ever. Rare these days. Thank You
Date published: 2019-01-21
Rated 4 out of 5 by from Good product, horrible warranty registration. We noticed warmer rooms right away, could feel the cold near the old door and windows, not now. Good installers. Sliding door is attractive, opens and closes nicely. Registration was a royal pain. Would you like to enter your required customer information six times? Happy I didn't replace fifteen Windows, wouldn't have registered them. Now you send me six review requests, I'm only sending one!
Date published: 2019-01-16
Rated 4 out of 5 by from Too early to tell. Ask me in a month. I WILL LET YOU KNOW IN A MONTH OR SO. tOO SOON TO TELL.
Date published: 2019-01-15
Rated 5 out of 5 by from Great features The installer was very professional, friendly, and on time. He takes his time working which is positive because he’s making sure that he’s doing it right. We are satisfied with the service. So far, we are satisfied with the new window.
Date published: 2019-01-10
Rated 5 out of 5 by from great features We just had them installed yesterday, but so far we are impressed with the insulating quality, and they will be so easy to clean compared to our old aluminum frames! Your request for a review is a little premature since we have had them for less than 24 hours!
Date published: 2019-01-09
Rated 5 out of 5 by from Replaced existing vinyl windows We needed to replace some no name vinyl windows the previous owner had installed. Leaky, full of condensation and parts deteriorating. Milgard comes with a lifetime warranty which took care of some of the concerns but now that they are installed the difference is immense. Beautifully clear and easy to operate.
Date published: 2019-01-08
Rated 5 out of 5 by from Beautiful window! We purchased these windows to replace old aluminum framed windows in which the seals were broken and had fogged glass. The Style Line windows made a tremendous difference to the appearance of the house. We are extremely happy with our purchase.
Date published: 2019-01-07
Rated 5 out of 5 by from Great Windows I can't say enough great things about these windows after installation. We previously had 30 year old aluminium windows that came with the house when we first bought it in 2017. Those brought in a lot of draft during the winter months and a bunch of condensation. After switching to Milgard Vinyl windows, we are happy to say that we no longer have to endure those cold winter months anymore. I love love love our new Style Line Milgard windows. Keeps the cold out and the heat in; just the way I want it to be. The one thing I love most about these windows and the company is the warranty they offer with it. "Milgard 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 his home." If a company can offer you a lifetime warranty for their windows, that means they're confident in their own product. Which makes me confident in the value they will add to my home.
Date published: 2019-01-05
Rated 5 out of 5 by from Love my Windows! Awesome product, love the clean open look and the installation was seamless. Crew was amazing, highly recommend!
Date published: 2019-01-04
Rated 5 out of 5 by from New windows From the moment I began dealing with Bill, our sales rep from The Window Guys in Corona, Ca., as well as their office staff, I was impressed. There was no pressure and they kept me well informed. The installation crew was very professional, clean and non intrusive. The windows were finished off perfectly both outside and in. The caulk lines are amazing. The next day we had a wind storm. Not one ounce of sound came through (except in the rooms that we haven't done yet). All of us in our family are construction workers and everyone of us is beyond impressed. Now we need to save our pennies to get the rest done! We HIGHLY recommend The Window Guys and Milgard Windows.
Date published: 2018-12-31
Rated 5 out of 5 by from Energy efficient Replaced 40 year old windows. The difference in sound, moisture & energy cost is awesome!
Date published: 2018-12-30
Rated 5 out of 5 by from SO PRETTY!! We just got these for Christmas and LOVE them! We love the trim and noise reduction. We are very very happy with the purchase.
Date published: 2018-12-28
Rated 5 out of 5 by from Great quality. The best quality i ever seen I bought these windows a couple months ago. I am happy I did. I feel the difference inside the house. After the heater stops, for a long time the house keeps warm. I am already saving money in the electricity bill
Date published: 2018-12-25
Rated 5 out of 5 by from Loving them A very nice change. Our home looks nicer and it is so much warmer.
Date published: 2018-12-24
Rated 5 out of 5 by from Great look on the new windows We’ve had these for three months and they are great. They look nice and are the perfect replacements for our old wooden single hung windows.
Date published: 2018-12-24
Rated 5 out of 5 by from What a difference!!! We just had every window replaced with this product. The difference in the insulation factor is very noticeable. Our home finally stays warm and the windows & patio door look amazing! The installers were very efficient, friendly and talked to us during the process. I highly recommend this product.
Date published: 2018-12-20
Rated 5 out of 5 by from The windows are great The install and the finished look is great I'm ordering 3 more Waiting 2 months for gift card promotion not so good
Date published: 2018-12-16
Rated 5 out of 5 by from Quick install and beautiful Still to early to tell how ell they work in the long run but for now they look great and open easily
Date published: 2018-12-15
Rated 5 out of 5 by from Look great and easy to operate Windows feel more secure and durable and look nice.
Date published: 2018-12-15
  • y_2019, m_2, d_22, h_1
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.11
  • cp_2, bvpage2n
  • co_hasreviews, tv_0, tr_537
  • loc_en_US,, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_milgard
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getContent, 22.08ms