[mikewarot]

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.

[dunham]

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.