Come a cross this the other day has any one tried one?the xxl looks good for the price and looks about the same size as the maxogen just its a cotton filter insidhttp://www.greenfilters.co.uk/Green_Filters_-_Twister_Filter_System-Twister_Filter_System_XXL_Size/c683_689/p100487/TWISTER_FILTER_SYSTEM_XXL_SIZE_-_INLET_HOLE_INSIDE_DIAMETER_70MM_-_SILVER_COVER/product_info.htmle.