【Red and Green Indicator Design】The interior of door lock features a rotating locking knob , while the exterior has a red and green visual window . Turning the knob from the inside switches the status , allowing those outside to instantly see if the room is occupied , avoiding the awkwardness of accidentally pushing the door open 【Easy and Quick Installation】Our privacy indicator door lock features a surface mounted quick installation design with a complete set of stainless steel brackets and screws , allowing for assembly without special tools . Compatible with standard bathroom and shower door panels 35–45 mm / 1.38–1.77 inch thick , making installation straightforward 【Complete Set】The privacy indicator toilet lock set comes fully equipped with all necessary components , including 2 door lock , 2 solid square rod and 4 bamboo joint bolts . No additional parts need to be purchased ; installation can begin immediately upon unboxing 【304 Satin Finish Stainless Steel】This bathroom indicator lock is crafted entirely from 304 satin finish stainless steel , features rust , scratch , and fingerprint resistance . Paired with a heat resistant plastic base , it remains enduring in humid bathroom environments , is easy to wipe clean , and significantly extends its service life 【Suitable for Home and Commercial Settings】The minimalist design blends seamlessly with modern , industrial decor styles . The toilet indicator lock is not only suitable for restroom doors but also for bathrooms , shower stalls , and storage rooms , and can be used in residential settings as well as commercial environments such as restaurants , hospitals , and airports, Manufacturer: Zhjiutak