The FS Drop-In-Grate Filter is designed for easy cleaning as well as having the capability for easy Mosquito Vector testing access.  The FS Filter has all four panels that contain multiple bypass slots that drain down into a lower filter media tray.  The lower filter tray's purpose is to protect and prolong the filter media's life.  The filter also has an optional water sampler that can be lowered under the filter tray.  It can be implemented  and be used the same time as the mosquito vector testing!