Douper Lid Stay 105 Degree Open with Soft Close, Lid Support for Toy Box and Upward Top-Opening Flap Doors (Pack of 1)

Will this work for a wall mounted top openint door? So the hinge and pivot point is on the top of the door thus 3/4 offset from where it sets closed.

Can this be used on a plastic deck box ?

Can this be installed to keep a top-opening-lid open at less than 105 degrees? For my project, I’d like to open a lid to 80 degrees or 90 degrees max

This work for a glove box on a boat?