Project YIPPEE

How to Change a Dirty Mask Filter

1) Determine that filter is not working anymore (cough, cough)

2) Remove the old filter from the mask shell

3) Replace with an expensive new filter.

Project YIPPEE - An Adventure in Safe Living
Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 & - gods when will this end - 2011