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 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 experts are here to help!


Trinsic™ Series Patio Door

See All Reviews
Trinsic™ Series Patio Door is rated 4.2 out of 5 by 86.
Rated 4 out of 5 by from Great Value These windows, for my new build questhouse, came in at a much lower price than the three other quotes I received. I don't usually go with the lowest bid, but after seeing a sample of the window I went with them. I'm glad I did. The bronze finish, really a dark charcoal grey, was just what I was looking for. The windows are tight and streamlined and look more expensive then they were. Install was straightforward. Overall a very good value. I would buy them again.
Date published: 2019-07-11
Rated 1 out of 5 by from Beyond Disappointed Purchased a variety of Trinsic Vinyl Windows ($9K), as I was assured the application process bonded the vinyl/paint. The windows looked as if my child spray painted a piece of metal. Paint chipped off, flakes everywhere. My "beautiful" bronze window has white spots in all the places where paint has fallen off.I just received windows, and rep has been responsive to my initial dissatisfaction.. I will modify review if I end up with new looking windows (all I want for the price I paid). I will say, at this point, I wouldn't get anywhere near these windows!
Date published: 2019-07-08
Rated 5 out of 5 by from Wonderful door We self installed this on June 27, 2019. Two of my adult sons and I are good at DIY so we had no problems doing it ourselves. We completely removed a 40 year old sliding glass patio door, replaced the aging threshold and installed our new Trinsic line sliding glass patio door in just under four hours. It is now July 7 and I can not express how absolutely pleased we are with this new door. It locks easily and securely. Our 3 year old grandson can open and close the door with ease. The glass is crystal clear and the screen door functions very well. I highly recommend it to anyone else.
Date published: 2019-07-08
Rated 5 out of 5 by from Great Windows Bought and had installed late June.Very good product for the price.Very happy with with my purchase just in time for the summer heat.Sliding windows and door work perfectly and installation went very smoothly.Have immediatly noticed the difference with sound and temperature reduction inside.
Date published: 2019-07-07
Rated 4 out of 5 by from Installation looks good but...see below We have two issues with Milgard. We just had them installed and overall we are satisfied except for some of the windows stationary side is not square with the corner of the frame leaving a gap. The other issue is with the Tuscany doors which is covered on a second review as apparently only one item can be reviewed at a time. When door is selected after window, window selection is cleared. The installation crew overall did a good job but had to follow the worker around that applied the foam calking and call his attention to gaps he was leaving. Also what really upset us was that they did a horrible job of washing the windows before leaving. When I called to ask them to return and re-do the widows I was told they were not "professional window washers" and to call one myself. It really put a damper on what the crew worked very hard to be an amiable and good installation.
Date published: 2019-07-03
Rated 5 out of 5 by from Great Doors Doors are great, especially the locks. Look great.
Date published: 2019-07-01
Rated 2 out of 5 by from Bad quality The windows came in wrong sizes, label on the window stated 93 inches in length which was the correct size that i ordered, but window didn’t fit in the existing frames, when we measured the window with the tape measure, it measured 93 inches and a quarter. We ended up grinding 1/4 on inches from the aluminum frame. We ended up paying more for the installment. When I called Millard customer service they brushed me off without helping me.also they charged me good money to deliver them where I was not told that I can pick them up myself and save a few bucks. Very bad service. Also some of the windows have dirt inside the double pane glass. I never will buy Millard again.
Date published: 2019-06-28
Rated 1 out of 5 by from Simplistic Beauty We were in need of a sliding door after 27 years in our home. After much research we decided on Milgard and it was the best decision. we are happy with our purchase. It is beautiful. Worth every penny.
Date published: 2019-06-27
Rated 5 out of 5 by from Attractive & efficient I love how these windows look & function! Very happy with this product.
Date published: 2019-06-25
Rated 4 out of 5 by from Bedroom and bathroom windows I am glad that the windows are keeping the rooms' temperature as I would prefer in this hot Tucson area (June 2019). I am only disappointed that one of the bedroom windows would not lock. The replacement part was called in right after the June 4 installation. Now 20 days after, I did not receive it yet. Also the bathroom window 's size was incorrect and so this window was just installed last June 18. The installer/contractor gave the correct dimensions but still receive the wrong sized window on June 4, 2019.
Date published: 2019-06-24
Rated 5 out of 5 by from I LOVE my new Milguard windows! My husband and I just replaced 20+ year old windows in our living room and dining room. Milguard came highly recommended by friends. We had a great experience with Bennett Glass, who directed us to RMB Construction - their recommended installer. RMB was fantastic - our older home required specialized measurements to ensure a perfect fit. I am thrilled with the ease of opening and closing these windows, and they have improved the look of our home.
Date published: 2019-06-20
Rated 5 out of 5 by from New windows purchase Greg, is very helpful and excellent customer service!!! he went out of his way and did a great job helping me find the right windows for my home!!!!
Date published: 2019-06-18
Rated 5 out of 5 by from Simple modern I liked them as they are very stylish in the sense that they don’t look vinyl as the areas that support the frame are narrow,especially as we decided to go new construction I hate the look that everyone knows that you have retro fit windows
Date published: 2019-06-08
Rated 5 out of 5 by from Attractive and Great Features and Warranty We had all the windows and one sliding glass door replaced and are very pleased with the results. The installers did a terrific job of installation. They are attractive from the street, provide more security than our previous aluminum framed windows, and though it's only been a month, it seems the house is more uniformly cooler than previously which is highly important living in the southwest. A very important feature to a homeowner, considering the cost of replacement, is the lifetime warranty that Milgard provides. We're most happy with the product.
Date published: 2019-06-05
Rated 5 out of 5 by from Beautiful Windows I love the elegance and symmetry of Milgard Trinsic windows. There was an issue with one window screen and it was immediately taken care of under warranty.
Date published: 2019-06-05
Rated 5 out of 5 by from Outside noise minimized Had 15 windows replaced a few weeks ago, the first thing I noticed was that the outside noises coming inside were decreased dramatically. My air conditioners are running much less, can’t wait to see my first electric bill. Very pleased with the Midgard windows.
Date published: 2019-06-03
Rated 4 out of 5 by from doors and windows Very disappointed that these windows come with no packing materials which results in scratched trim Unfortunate
Date published: 2019-06-02
Rated 5 out of 5 by from Love them they look fantastic and the installers were very nice and professional
Date published: 2019-05-31
Rated 5 out of 5 by from Overwhelmed with quality and ease of function Installers went the extra mile, one of original sliders was installed poorly and the new door took finesse. The guys stuck with it to the end.
Date published: 2019-05-25
Rated 4 out of 5 by from Good windows These are good window and they look lovely from the inside of the house. from the outside of the house they look glued on and very plastic. This might be the contractor's fault not the window but still the look bothers me. The sound level is not as I had hope either. I had one french door put in several years ago and it was the higher end Milgard. If I were to do it over again I would go with the higher end windows.
Date published: 2019-05-23
Rated 5 out of 5 by from Great features Loved my new Milgard Trinsic Window. I have Milgard windows in my home and never replaced the old one due to a window a/c Since I added this one, it was a nice change to see the features open/close open for breezeway. I'm impressed once again by Milgard.
Date published: 2019-05-22
Rated 5 out of 5 by from dark vinyl windows We have only had these for a few days but so far we are very pleased with our purchase! We will see how we like them this Winter. Hopefully better insulated now.
Date published: 2019-05-20
Rated 4 out of 5 by from good windows and great warranty Just installed them in past week, too soon to give proper review, but think they are just fine as of today.
Date published: 2019-05-20
Rated 4 out of 5 by from GREAT LOOKS AND SOME GOOD FEATURES Ours were installed May 3rd 2019 save "MEASURING MISTAKES" ON Kitchen Window ... still not installed, and bathroom window was "CLEAR AND NOT FROSTED GLASS". MADDENING THE WAIT. Should have all been done by now. Can't complain about quality of windows or outstanding job by the installers, but sure would have liked it a lot better if care in measurements and bathroom had the frosted glass it was supposed to have. This has created and inconvenience for us that we have to live with until corrections are made. We know the correct sized kitchen window will be installed sometime in early June along with the frosted glass, but it doesn't make one feel any better having to wait and additional three, four or five weeks to complete the job. Otherwise we're happy with the product.
Date published: 2019-05-18
Rated 4 out of 5 by from Tan Color Trinsic Windows in Tan our beautiful, we love them.
Date published: 2019-05-16
Rated 5 out of 5 by from Very nice quality windows. The windows were installed in two days. The installers were knowledgeable & efficient. They even worked around my sick husband as not to disturb him.
Date published: 2019-05-16
Rated 1 out of 5 by from Disappointment The contractor installed these new windows, but the existing 7 Milgard windows are turning opaque.
Date published: 2019-05-15
Rated 1 out of 5 by from Garbage product If I could give Milgard negative stars, I would. I let my contractor and his rep talk me into Milgard to replace my windows and sliders and what a nightmare. The new Trinsic series casement window was produced with a defective part that caused the windows to bow. They were difficult to install because the frames were bowed, thus increasing my installation cost. All of the casement windows and several others have had to be replaced or repaired and over 4 months after placing the order, we're still trying to get fully functioning/not defective windows. Customer service has been persistently rude and made scheduling the repairs difficult. The windows themselves, while advertised as sleek and modern, are just chunky typical vinyl frames (they were so new we weren't able to see them in a showroom in our area, just the pictures online). At the time we purchased, Milgard was offering a rebate to homeowners. I filed for my rebate at the end of January, which was to take 8-10 weeks to arrive. We started calling Milgard after 12 weeks to inquire about our rebate. It took half a dozen phone calls before a response. 3 weeks ago, we were told they made an error and were expediting our rebate within 2 weeks. Half a dozen additional phone calls later, no response, no rebate, still have defective windows. Horrible experience, horrible company.
Date published: 2019-05-15
Rated 5 out of 5 by from good quality. good looking happy customer. Reduced outside noise considerably.
Date published: 2019-05-08
Rated 3 out of 5 by from Good windows POOR service I bought these Milgard windows through Lowes. The worse experience ever! They started the install in March and its May and they are still not a finished job. Had several issues with receiving the windows from Milgard.
Date published: 2019-05-07
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