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The idea was to protect the radiator from flying rocks and big insects. There are many posts on Jeep boards how people did their mesh grill in Jeep Wrangler. Project is easy and should not take much time.
Travels in the Americas could bring the Jeep to places not too secure. Being honest, I did not feel well knowing that anyone can open the hood and mess around.
A rear gate of a Jeep Wrangler is a perfect location for a small table. It could be handy on many occasions.