Slider door security

A quick learner from USA says:
December 22, 2016
I saw in one of your discussion threads about a user wanting to add security to a sliding patio door where the moving door is in the outside track. You suggested that product code 80-027 might help.

My son just bought a house with such a door (not sure what brand) and I want to know how can you know whether it's safe to drill holes for this product without cracking the glass? Any suggestions or tips?
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
January 3, 2017
I'm a bigger fan of the 80-006 bar, which has a metal bracket when using it on an exterior sliding glass door. I believe either lock would work, it depends which one you like better. Also, you must definitely be careful not to damage the glass in the door when installing either. The rule of thumb is not to pass the past the mounting screw holes on the glass side of the handle. The glass itself goes into the door frame approximately 5/8" around the perimeter of the day light opening.
Sliding Door Security Bar Lock
Sliding Door Security Bar Lock
80-006
$15.97
Security Safety Lock
Security Safety Lock
80-027
$13.34
How to install the 80-006 sliding glass door security bar
How to install the 80-006 sliding glass door security bar
GUIDE
READ >
How to maintain a sliding glass door
How to maintain a sliding glass door
GUIDE
READ >
How to replace a sliding glass door roller
How to replace a sliding glass door roller
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.