Lock for silverline patio door

Question

We want to install a strong lock on our patio door, it is Silverline brand double mortise lock, we look exterior handle off and there are no punch out areas.

Emily · Accepted Answer

Hello there!

Is your old handle's installation hole center spacing 3-15/16"? If it is and the thumb lever is centered, see the 82-030A. However, see the 82-030B instead if it's offset. Carefully compare the specifications for these parts with yours and see if one aligns with what you're looking for.

If you have any questions just let me know!