Thermal Gard Season-All Latch
A contractor from Portland, OR says:
April 5, 2016
I believe the left part of this image shows the sweep latch, but not sure what the right portion is and if you have it. The right portion says "Thermal Gard by Season-All" and is about 4" x 1-1/8" according the photo my customer sent me.
Dave from SWISCO responded:
April 7, 2016
The lock resembles our 90-133R, but I'm afraid we haven't had any luck with the latch on the right, either. I would suggest using a 26-215 surface mounted latch. You will need to adapt it to your window to work, but it is the closest match we have. You may want to watch the video below for more information.