Removable filter slides are available for the Sciencetech Model FH Filter Box Holder and Sciencetech Model FH-AC Air Cooled Filter Box Holder. These Removable filter slides allow users to premount various 1" or 2" filters so that they can easily be exchanged into the filter holder box without the need to mount and demount each filter element from the single slide. There is a filter slide version for both square and round filters. Please note the delivery time for square slides are considerably longer than round slides as they are not stock items.