Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

Silver Sliding Patio Door Mortise lock

Ratings & Reviews for Prime-Line Silver Sliding Patio Door Mortise lock

4.2
188
Review
 4.2 out of 5
188 Reviews


86% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The sliding glass door mortise lock is generally a reliable and functional product, with customers reporting it is easy to install and effectively secures the door. However, some users experienced quality and durability issues, with the lock breaking or failing within a short time. While most found it a convenient and affordable replacement, a few had difficulty getting it to fit their specific door, requiring additional modifications. Overall, the lock appears to be a serviceable option, but customers should carefully measure their door and consider potential fit issues before purchasing.

Customer review summary generated by AI, including incentivized reviews.
188 Customer Reviews

Broken Spring!

Would Not Recommend

I can't begin to count how many of these I have purchased and installed. We go through two to three a year! As others have stated, the latch that was in the door lasted well over ten years and now these last a few months. There is a small spring inside that breaks. They are absolute JUNK, but I can't find anything else that will fit.

October 21, 2018
Sweepstakes
Was this Review Helpful ?

Door latch

Would Recommend

Won’t latch unless you hold it up as you close it even after adjustment of latch and rollers.

October 2, 2018
Verified PurchaserSweepstakes
Was this Review Helpful ?

Piece of crap!

Would Not Recommend

Lasted all of 6 months! That's with no kids using it!

September 12, 2018
Sweepstakes
Was this Review Helpful ?

cheap lock

Would Not Recommend

bought yhis for an older door ...did not work .....was only selection

September 9, 2018
Verified PurchaserSweepstakes
Was this Review Helpful ?

Worked like it needed to

Would Recommend

Easy to install and did the job that it was supposed to do.

August 24, 2018
Verified PurchaserSweepstakes
Was this Review Helpful ?

Close but no cigar!

Would Recommend

I reworked my 25 year old patio door last fall with a thorough cleaning, new rollers and lock mechanism. It went from a tug-of-war to open and close to a gentle one finger push. After all of these years, my lock mechanism had also got sticky and hard to turn the key. I found this lock mechanism at Lowes and replaced it as well. If I had reviewed this mechanism when it was installed, I'm sure I would have given it a "5" rating as it was smooth and worked well. A few weeks ago I noticed that both...

August 19, 2018
Sweepstakes
Was this Review Helpful ?

Seems to be a short lived item, reliability wise.

Would Recommend

I bought the same item last year and it lasted all of one year! The one before it lasted about 10yrs. The original lasted 20yrs. I can only wonder where the first two were made and, of course, just how long will this new one last? I’m crossing my fingers. I like going to Lowes because I can get a military veteran’s discount on every purchase every day of the year!! Thank you Lowes.

August 11, 2018
Sweepstakes
Was this Review Helpful ?

Sliding Glass door lock

Would Recommend

I purchase this lock every four to six months, since it is the only lock that fits my sliding doors. Unfortunately, the lock constantly breaks. Every four to six months the lock needs to be replaced. I open and close my doors quite often during the day as we have pets that need to be let out. Constant use of the door opening and closing causes something inside the lock to come loose and break. The lock cannot be fixed and needs constant replacing. I wish this company would make a stronger l...

May 8, 2018
Verified Purchaser
Was this Review Helpful ?

Only choice to fix our slider.

Would Not Recommend

Average life of this latch is one year. Our sliding glass door is our only back door so it gets used often. But for the 18 years we've lived in this home I've replaced these at least 10 times. They work great until they don't. Without notice most times they just stop working. I think the spring breaks & jams the internals. Unit is not serviceable & replacement is only option.

April 28, 2018
Verified Purchaser
Was this Review Helpful ?

Great replacement part

Would Recommend

If you need to replace your slider lock assembly this one works great, easy to install took me about 30 minutes to take out the broken lock and replace it with the new lock assembly.

February 1, 2018
Verified Purchaser
Was this Review Helpful ?

Patio Door Latch

Would Recommend

This was pretty easy to change. You must follow the instruction to hang some kind of weight on the hook so both hands are available to put the screws in and not let the assembly fall down inside the door. Other than that it was an easy task.

December 27, 2017
Verified Purchaser
Was this Review Helpful ?

Patio Door Lock

Would Recommend

I bought the lock as a replacement and the installation was simple and it worked very well. The locksmith at the store was very helpful. He searched the shelves for an extended time and made sure I had the right one. Kudos to him and Lowe’s for their assistance. Thank you.

December 26, 2017
Verified Purchaser
Was this Review Helpful ?

Perfect Fit

Would Recommend

My old lock broke and I needed a replacement. The new lock fit perfectly and the lever action is very smooth.

December 7, 2017
Verified Purchaser
Was this Review Helpful ?