What is this?

woodyp

Mod Squad
TFP Expert
LifeTime Supporter
Apr 17, 2010
10,228
East Texas
#2
Part of the International Space Station? I dunno. Looks like some sort of cover for a vent/jet/drain. What is it's composition and how big is it? Weird ear ring!
 

JamesW

TFP Expert
Mar 2, 2011
13,049
#6
It's to keep debris out of the air orifice. There really shouldn't be any debris in the heater. However, debris can get in the heater. It should just snap back in.