Comment by mikewarot
17 hours ago
The weight from a CRT is mostly about the amount of glass required to keep the atmosphere out, as it's essentially a vacuum bottle with better marketing. On that 21" display, you've got about 6000 pounds of force trying to push the face inward, not to mention the sides, neck, etc.
Yeah, these monitors were a bit heavier than most consumer 21" monitors at the time. We also got Viewsonic monitors for PCs, which were lighter. At the time, I had assumed the additional weight was from extra shielding, but I later read that some of the weight difference was a metal frame holding the wires. The trinitron had a bunch of vertical wires instead of a grid of holes on the front - If I remember right, they'd shimmer a little if you smacked the side of the monitor with your hand.
It's possible they also had more glass than typical for a 21" monitor, I don't recall if they were any flatter than the Viewsonics or not.