In this study we made practices for visual-psychological perception of SUKASI by the vertical slit model with the same vacancy ratio of 50%. Result: (l)As the effects of SUKASI, two conflicting effects of seeing through and sheltering are requested at the same time as "transparency and opacity", "open and close". (2) We get two types of the visual perception in SUKASI. One is KOOSI type in which we see the frames themselves as "figure". The other is SUDARE type in which we see scenery behind the slit as "figure". (3) The narrower the frame and vacancy, the bigger the visibility.
