Commercial vs retail TV what are tech differences?

I know there is a big difference between the same model commercial TV and a Retail version TV. But what are the actual physical and technical attributes that make them so much better.

Eric Baer
If you are looking at the panasonic plasmas, the only difference is the model number.
The main difference between all commerical and cosnumer Plasmas are the RF immitions.The consumer and comercial versions are nowhere near the same in specs when it comes to leakage of RF.This is the big reason for difference in cost.Though tempting,stay away from commercial pieces as they will cause havoc with your gear.