Sliding door (4 panels on 2 tracks)

Air Tightness
JIS: A-3
Noise Insulation
JIS: 25 dB
Water Tightness
JIS: W-2 (150 Pa)
UNIQUE FEATURES
Watertight sill with drainage devices that prevents rain water intrusion
Vertical panel frame that provides easy opening and closing
The easily adjustable outer-panel lock
High quality security lock
The high security sub-lock come standard
Sliding external insect screen