To provide a filter supplying facility that carries filters in a horizontal position into a filter replacement room by remote operation and then can transfer them to a filter replacement device.

This facilitity 20 is so constituted that stock filters 2 are carried into a filter replacement room 4 equipped with a filter replacement device 3 that replaces the filters 2 with them kept in a vertical position. In this case, a transporting device 22 is provided in a filter supply room 21 to keep a plurality of the filters 2 that are inserted from the first opening 24 into the filter supply room 21 in a horizontal position and transport them from the second opening 26 to the filter replacement room 4, and a delivering device 23 is installed in the filter replacement room 4 to receive the filters 2 from the transporting device 22, pull them into the filter replacement room 4 and turn around them from the horizontal position to the vertical position.