My technical contact at Putco gave me the following information as to the differences between the Putco Punch Grill # P84111 and Putco Designer FX Grill # P64304.
The difference between the two grilles is the shape of the holes where the air passes through.The # P84111 is machine punched with a basic circular shape, and the # P64304 has a honeycomb pattern, which is kind of octogonish in shape.
Both grilles are made out of stainless steel, have designated areas for your GMC logo and... view full answer...
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