These windows are above a garage. They open from the bottom (not left/right). The TRUTH arms when fully extended are about 7" and the crank base area is also 7".
Thank you for any help!
Nancy
Lauren from SWISCO responded:
April 5, 2024
Hi Nancy, thank you for posting,
At first sight, your operator resembles either the 39-453 or the 39-312, but the arms are different lengths than what would provided of your original. Please review the diagrams of each and double check dimensions to see how they compare.