Most vent screens may be removed for cleaning. Remove the crank handle first, then most manually-operated models have 2 screws holding the screen in place, remove them and the screen will fall out. Blowing dirt and bugs up and away from the screen works, but removal for washing is mandatory for our RV's, DW's hair spray clogs the screen, soap N water is the only remedy.
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2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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