Thread: Sealing Filter caps?
View Single Post
  #5  
Old 06-26-2015, 11:24 PM
Olorin67 Olorin67 is offline
VideoKarma Member
  
Join Date: Feb 2014
Location: Milwaukee
Posts: 927
those holes might be safety vents to keep them from blowing up if they fail.
Reply With Quote
Audiokarma