Sullivan Supply Replacement Air Filters for The Beast (9.50 × 6.50 × 0.50 in)Keep your The Beast Blower running smoothly with these replaceable air filters. Clean filters daily. Completely replace filters every 2 3 months. Includes 2 Air filters Cleaning instructions: Step 1: Lift filter out of cradle. Step 2: Using a gentle stream of air, blow air through the side that faces inwards and blow dust and debris off the filter material. Step 3: Once all dust and debris are removed place air filter back into cradle. Note: if filter