Trinsic Series vinyl sliding patio doors
Trinsic Series vinyl sliding patio doors

Trinsic™ Series Patio Door

A contemporary vinyl patio door with a frame profile so narrow, you’ll hardly know it’s there.

Trinsic™ Series

A sleek and contemporary vinyl patio door.

Trinsic Series vinyl sliding patio doors
Trinsic Series contemporary vinyl windows
Contemporary Look. Narrow Frame.

The Trinsic Series vinyl patio door is our newest and most contemporary vinyl sliding door available. The narrow frame profile provides the maximum available viewable glass area to help you enjoy amazing outdoor views. The newly designed, sleek hardware features 90 degree angles for a very modern flair. It’s the perfect look for contemporary homes.

Benefits of Trinsic Series

  • Contemporary Frame
  • Durability & Energy Efficiency
  • Hardware
  • Signature Vinyl Formula
  • Full Lifetime Warranty
Trinsic Series vinyl sliding patio doors

Contemporary Frame

If you are looking for a vinyl patio door with a contemporary feeling, our new Trinsic Series is for you. The sleek style is the perfect way to create a modern look for your home and the maximum available viewable glass area can help highlight amazing views.

Durability & Energy Efficiency

We produce our own vinyl formula for the Trinsic Series patio door. The durable frames will not absorb moisture and do not require painting. Talk to your Milgard Certified dealer about ENERGY STAR® requirements in your area when you select one of our energy package options.

Trinsic Series vinyl sliding patio doors


Trinsic Series sliding patio doors come with a newly designed, squared off handle. This crisp, clean, contemporary look offers a very modern flair. Consider the optional upgrade for an even narrower handle that blends seamlessly into the frame.

Trinsic Series vinyl sliding patio doors

Signature Vinyl Formula

We’re proud of the signature vinyl formula we use across our vinyl line. We also extrude our own frame materials and fabricate them in house for a quality patio door that meets our high standards, and yours.

Full Lifetime Warranty

Full Lifetime Warranty

Trinsic Series patio doors come with a 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 you own your home. This extends 10 years from the start date, if you sell your home. Glass Breakage is an optional upgrade.

Trinsic Series Operating Styles

  • Sliding
Trinsic Series vinyl sliding patio doors


Trinsic Series sliding vinyl patio doors are the perfect complement to Trinsic Series windows. They are designed with a narrow frame profile that can help expand your view. Choose from 2, 3 and 4 panel options.

Our Window and Patio Door Experts are Here to Help!


Trinsic™ Series Patio Door

See All Reviews
Trinsic™ Series Patio Door is rated 4.2 out of 5 by 118.
Rated 5 out of 5 by from So clear This was purchased and installed by a volunteer group, working on my home. Cannot believe how clear the view is from a new modern design window, over the old aluminum that was replaced. Latch and lock work so smooth, and unit slides open and closed very easily. Just what I need being disabled.
Date published: 2019-08-31
Rated 5 out of 5 by from Sliding door Sliding doorWhat sister place that’s wonderful and my tenants love it looks good performs well
Date published: 2019-08-31
Rated 5 out of 5 by from Gorgeous windows! We are building our forever home with an awesome view. These windows are gorgeous and beautifully showcase our view! Love them!
Date published: 2019-08-30
Rated 5 out of 5 by from Patio Door Excellent window for the price. Installers has an easy time.
Date published: 2019-08-28
Rated 5 out of 5 by from Perfect Windows do exactly as expected cut heat and sound!
Date published: 2019-08-28
Rated 3 out of 5 by from Seemed to work well so far They were just installed. Need to wait to see how they perform through the winter.
Date published: 2019-08-27
Rated 2 out of 5 by from Doesn't slide well I bought 2 standard Z-Bar and 2 new construction single hung windows for our bathrooms. The sliding windows fit loosely, causing the windows to not slide well. Something in the rail even fell out. Not sure what's wrong. They do look beautiful though.
Date published: 2019-08-26
Rated 3 out of 5 by from Frustrated (2nd purchase) I just went to dry fit the window in the rough opening, and there is a crack in the window frame in the lower left corner. Now I have to install it so we can sleep in our bedroom until Monday, and probably wait another week or more to get warranty service. Very frustrating.
Date published: 2019-08-24
Rated 2 out of 5 by from Poor Quality Control on Painted Windows After returning the windows three times for quality control issues with the paint, welds and finish I reluctantly ordered a the second story of windows for the home we are remodeling. I am hoping that they can manage their finishes better and get some quality control in place or they are going to loose business and money doing rework on a product that costs more than the competitors.
Date published: 2019-08-22
Rated 5 out of 5 by from Excellent dealer! Was looking to replace older windows and patio doors in our house. Clayton Glass was the choice in Flagstaff! Installers were on-time and efficient.
Date published: 2019-08-21
Rated 4 out of 5 by from So far so good We've just had 6 of these installed. So far so good.
Date published: 2019-08-20
Rated 2 out of 5 by from Nice clear glass but... I bought 13 windows, various configurations, and 3 sliding glass doors. The glass is beautiful and very clear and we love the color of the vinyl. However, if you are buying Trinsic with a 'jump frame' install, be prepared to lose a LOT of total glass area!! Trinsic is supposed to maximize glass area, however they do not work with the retailer and installer to ensure you keep this glass area maximized so you will lose greatly. Also, according to the installer, Milgard does not wrap ANY windows, so damage is frequent. Multiple units have to be buffed out and at least 5 screens have to be replaced due to scratches. Also multiple batches of flat trim was warped (again not protected in any way) and a new batch from the factory has to be ordered -- meaning my windows likely won't b e complete for another three weeks. Lastly, they don't feel as cool as they should so I am now left wondering if multiple Argon seals have been compromised because none of the window and doors are protected in any way. This has been an extraordinary pain and I'm sorry now that I replaced my originals because of all of the above hassels.
Date published: 2019-08-18
Rated 5 out of 5 by from Beautiful Sliders Ordered windows after closing on house. Moved in May 11. Windows were installed July. I am very pleased with how windows keep the heat from coming inside as well as the harsh sun rays. Outside noise is greatly muted.
Date published: 2019-08-18
Rated 5 out of 5 by from Great Value, Design and Installation! We just had US Window and Door of Carlsbad, CA replace 25 windows and 2 sliders with the new Milgard Trinisic series and we couldn't be happier! We first did extensive online research and learned that Milgard is by far the best quality and value. We then began searching for a Milgard dealer near us and found US Window and Door in Carlsbad, CA (just 10 min. from our home)! We learned that they've been in business since 1987 and are the #1 Milgard dealer in San Diego County, so our choice was easy. We visited their showroom and met Martin, the owner, who educated us on the unique features and benefits that make Milgard the best. He then came to our home, saw what we needed, and provided a quote that was surprisingly fair and affordable. Within 5 weeks, all the windows and sliders were manufactured and delivered. Then the US Door installation team arrived and installed it all in just 4 days! They have their own employees do the installation, not subcontractors. Their expertise, courtesy and work ethic was incomparable. And the windows are amazing … our home is much quieter, the windows and doors slide so easy and the exterior of our home now looks brand new. And when the installation was complete, our home was cleaner than before. Best of all, they are a local company (not way over in Arizona), so we know they stand behind their work. And the Milgard lifetime guarantee is unbeatable! If you are considering new windows, we strongly recommend Milgard and US Door and Window ... and we will be happy to chat with you personally if you want to hear more. Just ask Martin to put you in touch!
Date published: 2019-08-15
Rated 3 out of 5 by from Nice but The performance of the product seems fine but the construction of the corner joints are a bit sloppy. There were not enough screw caps included. I would recommend the product for a rental vs a home. Would probably upgrade for a home. Price works.
Date published: 2019-08-15
Rated 5 out of 5 by from Great door, great service! The customer service we received was impeccable! The door is even better!
Date published: 2019-08-14
Rated 1 out of 5 by from Shattered after 6 weeks Six weeks after being installed the Milgard sliding glass door shattered when I was out of the house. I looked on the internet and saw where spontaneous glass breakage can happen with double pane tempered glass. The house project is not even completed yet. My previous sliding door lasted over 28 years. The door has direct southern exposure and it was 88 degrees that day. The contractor has left a message for them and I have notified Milgard online of this. It's a headache.
Date published: 2019-08-14
Rated 4 out of 5 by from So far so good. Only two days into having them installed but so far so good. The house is a bit quieter and seems to be a few degrees cooler on a typical hot day. The action on the double hung windows is a bit stiff but I'm hoping they will loosen up a bit with use. They look is great.
Date published: 2019-08-14
Rated 5 out of 5 by from Beautiful Windows! Just had new windows installed! I could not be happier with the look especially the new garden window in my kitchen! So beautiful! Also love the slider door with French door grids. Windows look beautiful and literally glide!
Date published: 2019-08-12
Rated 4 out of 5 by from nice door slides and looks great, i will buy another for upstairs
Date published: 2019-08-09
Rated 5 out of 5 by from Great value! My Trinsic series were installed a month ago. They are a great product at a very affordable price point. I did my research and had several companies come and give me quotes from different manufacturers. By far, I got the most reasonable quote for Milgard Trinsic. Also, they have one of the best warranties in the market!! The windows look beautiful, have all the bells and whistles that I needed. I highly recommend the product.
Date published: 2019-08-08
Rated 5 out of 5 by from Wonderful improvement What a nice difference this door has made. All the windows had been done previous and this was the last one needing to be replaced. Great quaility
Date published: 2019-08-07
Rated 5 out of 5 by from Clean looking Installed August 2 great product will definitely up date my home
Date published: 2019-08-04
Rated 4 out of 5 by from Nice window The casement window is excellent, the only issue is with the window screen does not fit tightly, the frame has gap and the clips are not big to seal 100%
Date published: 2019-08-02
Rated 3 out of 5 by from Expected better I heard good things about Milgard windows so I bought one and installed it myself. Milgard refers installers to the AAMA 2400-10, which is an industry standard that explicitly says it is not intended to supersede the manufacturer's installation instructions. I think Milgard's lack of manufacturer instructions is a bit of a cop out, leaving the installer to do careful research into a wide variety of issues (e.g., compatibility of materials, etc.). The window itself (Trinsic) had some smudges and glue still stuck to it when I picked it up from the factory, as well as some other imperfections that suggest a lack of quality control. I expected a better product for the money.
Date published: 2019-07-26
Rated 3 out of 5 by from Acceptable window but not what I expected I just completed the install of 3 windows and a sliding door. One of the windows arrived with an exterior paint scratch and the door handle has a paint chip. One of the windows was out of square by 3/16 of an inch so a major pain fitting into a perfectly square opening. The patio door install tolerance was so tight we could barely wrestle this monster in. The patio sliding door arrived without the decorative plug to hide the adjustment screws. Having said that, the opening mullions are much beefier than expected so the viewing area seems restricted, I paid for the slimline Trinsic series so expected better. The latch system is acceptable and slides easily and once I get over the frustration of the install I expect the windows will function well.
Date published: 2019-07-25
Rated 5 out of 5 by from Trinsic Windows These windows are very modern style and look amazing especially when you get bronze exterior with white interior.
Date published: 2019-07-25
Rated 4 out of 5 by from Nice! This is my 6th and 7th milgard window purchase, but my first time with this series. So far, so good. I have faith in the brand and have yet to be disappointed. You can't beat quality AND consistency!
Date published: 2019-07-23
Rated 5 out of 5 by from Windows & Doors Happy with quality of windows doors. Not happy that I have not rec'd the promised rebate from first windows and doors installed and it's been well past the date due.
Date published: 2019-07-16
Rated 5 out of 5 by from Great Windows Came with the house from the builder ( Warmington Homes )
Date published: 2019-07-13
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