A/C vs. Non A/C fire wall

Rocky_JS said

the non a/c firewall retaining ring is just about the same diameter maybe a touch bigger as the a/c hole diameter.

this is a non a/c box in an A/C hole.

Click to expand...

Do you have any issues with the box moving around in the hole? Happen to have any pics with that trim ring removed? I didnt feel like messing with it so I sold the box but maybe I should have held onto the box. I dont like the big heavy A/C box and duct work