Filter Fit For Stihl BR320 BR340 BR380 BR400 Blower Engine Replacement Parts vehicle Fit For Stihl BR320 BR340 BR380 BR400 blower box, mounting frame inlet outline Core safe material, thick layered filter fabric; flexible rubber sealing edge, blocks tiny debris while supporting stable flow Smooth control stable feedback, balanced permeability design, maintains consistent engine running power during long yard work Simple installation easy , flexible edge structure, quick take out for regular dust clearing filter Reliable craft standard dimension, unified filter thickness; accurate frame contour, fits blower filter compartment