Faraday cage on chassis open ends?

[PharmRock]

I have a Marshall 1974 clone that I picked up maybe 15 years ago on ebay.  Its a decently built amp with good conponents and quality cab. 
Covering the inside back panel as well as over the chassis ends is a copper mesh material.  I'm guessing this is for RF rejection. 
Is this something that actually works as installed on the chassis (see pics)?   
I think the mesh is giving me a sympathetic vibration on certain notes but not sure...so I'm  thinking of removing it.  Otherwise the amp is relatively hum and noise free and sounds pretty good. 
Is this common to many amps? 

[PRR]

That's a very deluxe solution.

Dribble some Elmo's Glue to stick it to the fiberboard multiple places.

[sluckey]

I'd rip that stuff out and make a hat!

[Grees01]

Looks like brass screen to me.

[uki]

I'd rip that stuff out and make a hat!

 
With so much radiation in the air that would worth the trouble !

That's a very deluxe solution.

Dribble some Elmo's Glue to stick it to the fiberboard multiple places.

Or maybe use a stapler tool, or both!

If they put it there is for a good reason.

[acheld]

That stuff looks like a mess.   I'd remove it and send it off to sluckey 

Seriously, copper tape would be a much cleaner installation IMO.

[shooter]

I did a couple copper-foil wrapped amps, gotta have something that will survive an EMP 

[PharmRock]

I'd rip that stuff out and make a hat!

I'll pull it off the chassis.  The stuff on the panel is stapled on so I may just leave it there.

Guessing that this would have minimal effect, if any, on noise reduction.