notes for black monochrome painting: measured my tv monitor, it was roughly 42” x 24”, an aspect ratio of 1.75:1. Went to (not so) local art supply who had only one 42” stretcher in stock. Went home and ordered stretchers and cotton canvas online. Have black gesso, oil paint and staples needed to complete project.
https://www.topuptv.co.uk/tv-screen-height-width-dimensions/ h. X w. Numbers for provided diagonal sizes of tv by aspect ratio