These were the perfect items for my setup. In my 2006 Honda Accord the speakers come from the factory with a built in bracket as do these adapters. I simply bolted my Pioneer TS-A1676R 6.5" tri-way speakers to these mounting brackets/adapters and then simply clicked the adapters into the door panels. I removed some foam mounting strips from the factory speakers and attached them to the back of these Adapters to make sure I didn't have any vibration.But the setup was so tight I had to remove some parts to fit the foam.Given that,foam may not even be necessary.Overall I was very happy with these adapters for my project satisfied.
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