How-to-install-locks-on-french-doors, locks on inactive french door panels provide an added measure of security. the locks prevent a determined intruder from dislodging the inactive panel and compromising the locks on the active door.. Diy (do it yourself) video on the installation of deadlocks to a sliding window. leon white from a man at hand property maintenance in quinns rocks shows how to install a deadlock to a sliding ..., how to install door knobs on double doors [deadbolts, handle sets, and dummy knobs] - duration: 7:39. love create celebrate 5,847 views. The major feature of french doors is the glass pane or panes in the middle of the door. the glass itself poses a security risk in that it is breakable, making forced entry easier., how to install locks on french doors 11 january 2017 if you have french doors, they should be secure enough to prevent break-ins. french doors are vulnerable to burglary because of the glass panels.