WW2:Anti Grenade Cage on AFV’s

Does anyone have information on this particular defensive item.
I assume a cage to prevent grenades being lobbed into an AFV

thank you

 

I assume you mean the "RPG nets" that are fitted to many wheeled vehicles?
These are lightweight versions of the well-known SLAT armor as RPGs have a piezo igniter that requires a relatively hard surface to activate.
However, sandbags and SLAT are quite heavy, which negatively affects the performance of lighter vehicles. Hence these flexible nets

"A cage to prevent grenades from being lobbed into an AFV" is something I otherwise only know from WWII from the Sd.Kfz. 222

 

Thank you assumed it was a cage type thing but had never heard of it or seen a photo

 

The First world war had the Bomb-proof Roof:
THE BOMBPROOF ROOF

German Armoured cars usually had a cage on the roof of their open top turret:


But Generally I think this sort of thing has only occasionally been used.

 

The "Curse of Scotland" is a famous tank - iirc it was a survivor of the retreat from Burma. A Stuart with it's turret removed, it had the field made anti grenade cage over the opening. By 1944 in the Far East there was an approved scheme to add mesh over any part of a tank vulnerable to hand placed magnetic hollow charge mines. Whilst there are records in accounts of these being fitted, photos are rare.