Lock worn out for sliding glass door

Question

Sticker on screen for this sliding glass door has the name Quanex building products. Lock has become extremely difficult, next to impossible, to release when door is closed. Knob that turns locking mechanism either spins or refuses to turn. I was finally able to get it open again after numerous attempts.  I could not find any numbers without removing lock. This door is very important to us, it is used several times a day.  Thank you.

Emily · Accepted Answer

Hi there!

Thank you for reaching out to us. Your lock resembles the one that comes with the 82-402 lock set. I'm afraid we don't sell it separately, however. Review the specifications and see how they compare with your old mortise lock.

Please let us know if you note any discrepancies.

View of the mortise lock included with 82-402