PURPOSE: To prevent surely the outflow of water from the lower sections of the meeting style sections of a fixed screen and a moving screen to the dressing room side even at the time of shower sprinkling.

CONSTITUTION: A fixed screen mounting guide 22 bearing the lower section of a fixed screen is fastened onto the top face of a dressing-room side lower frame section 9a. A rail groove 28, which is communicated with a drainage ditch 16 in a bath room 10 and into which lower runners 17 projected to the lower sections of moving screens 2 are fitted in a freely travelling manner, is formed to the top face of a bath-room side lower frame section 9b. A projecting section 26 for a back board reaching the rail groove 28 from one side face on the bath room 10 side of the fixed screen mounting guide 22 is protruded from the top face section of the dressing-room side lower frame section 9a in the lower sections of the meeting style sections of the fixed screen 1 and the moving screen 2.