Includes 1 rear filter only for The Beast Blower. Filter should be replaced every 3-4 months.

Instructions:
Step 1: Using the 3/32 hex key provided remove the 4 screws holding the rear grill.
Step 2: Remove Grill and Filter.
Step 3: Place new filter on the unit and reattach Grill.
Step 4: Insert the 4 screws and tighten using the 3/32 hex key. Do not over tighten.

If filter material is ripped or damaged, replace filter immediately.