Another "What is this hole for"?

[Toad455]

Ok, I have another hole that I can't identify. It's on the firewall right under the holes for the heater hoses. I'm doing some work to the firewall and don't know if I should block it off or not, I don't remember anything it's for. The blower housing covers it up, any ideas? Thanks.

 

[Old Guy Bill]

Insulation pad retainer?

 

[Toad455]

Oh, from the inside? I bet it is, I'll go with that! I have a ton of pics during tear down but none that show that. There was several plastic retainers with rubber tips that held the insulation in, glad I didn't fill it in.

 

[Toad455]

Ok, I have another hole that I can't identify. It's on the firewall right under the holes for the heater hoses. I'm doing some work to the firewall and don't know if I should block it off or not, I don't remember anything it's for. The blower housing covers it up, any ideas? Thanks.

Never mind, I see that I asked this before a while back. I guess I'm losing it.