Brand new, unopened Nomura Tech Slide Lock Click-Click Plate Type - Ideal for slightly opening windows and ventilation. - Easy slide type, moved by pinching. - Compatible with both right-opening and left-opening windows. - Installation dimensions: Requires a gap of 5mm or more between the outer and inner sash frames with the crescent lock unlocked. - Color: Dark Brown - Size (maximum): 112 X 29 X 21 mm - Material: Polycarbonate I bought this for home use, but I didn't use it. Please understand that this item has been in someone's possession before purchase. Returns are not accepted to prevent issues such as product substitution.