US PAT 6.247.270 CA PAT 2.278.439 On the bar it says G-U
A quick learner says:
October 13, 2022
Lauren from SWISCO responded:
October 18, 2022
Hello, thank you for posting,
It appears your window uses an old discontinued GU operator. Please start by reviewing the 39-315 and 39-316 operators along with the conversion video below to see what you think!