The K9 Mask uses air filter refills to ensure the effectiveness of the mask and air filter every use. Each air filter is rated for a total of 4 hours of use.
To insert the air filter into the K9 Mask:
Open the zipper on the top of the mask.
Insert the air filter into mask with the "dark" side on top and "white" side on the bottom.
Place the curve edge of the filter facing the nose of the mask.
Insert the back corners of the air filter into the mask towards the neck straps.
Align the air filter inside the mask so all edges of the air filter fit against the sides of the mask.
Close the zipper on the mask.
VIDEO TIPS
Watch the K9 Mask Air Filter Insert Video Here: K9Mask.com/pages/how-to-insert-air-filter-into-k9-mask