We will be increasing our prices on certain bags on January 29, 2019. The price on bags with ‘B’ type filters will increase 3%.  The price of bags  with ‘T’ type filters will increase 5%. If you are not sure of the filter type you are using, see our Visual Identification of Filters page.  When ordering bags, please note that the type of filter is incorporated in the product name.  For example,  Type 3B bags use a ‘B’ type filter and Type 10T bags use a type ‘T’ filter. Thank you for your understanding, Lou