guys, guys, guys.
those masks are JUNK !!!!
i wouldn't put that on my face!
forget the replaceable element type resparators.
you can gat a 3M disposible mask for about 15 bucks
www3.3m.com/catalog/us/en001/auto_marine_aero/automotive_aftermarket/node_GSWPMWYB6Rgs/root_GST1T4S9TCgv/vroot_GSLPLPKL4Xge/bgel_W2XK6V865Cbl/gvel_3ZKQHJTG5Wgl/theme_us_aad_3_0/command_AbcPageHandler/output_html
they come in a zip-lock bag, keep them zipped up tight in the bag. if they are left out in the open air, they will continue to filter the air you left them in.
there good for about 1 month of "use" use meaning 10? -12? strait hours. i'm not sure how many hours the'll be active for.
i spray cars every day. and we buy them buy the case.i use them for a month{write date on packege} then chuck em'
if you have a beard/facial hair? you have to wear the mask very tight! uncomfortably tight!
fit the mask on your face, and cover the output hole with your palm. blow hard, into the mask, any leaks? if so,, it's not sealed right!
don't skimp on the mask!!!
go to your local auto body shop supplier and they'll help you out.
mike d.