It extends back to the tank top. If the child tries to lift the lid, the device hits the tank top and stops the lid from opening. To raise the lid, you swing the arm to the side while raising the lid. The lock automatically returns to locked position when the lid is down. You can still cover the lid with toilet seat covers if you wish.
Toilets become another play area for small children who are learning to explore their environment.
They will lean over to play in the water and fall in head first. At this size and age they cannot extract themselves. Do not leave this area unprotected. We have two types of toilet lid locks. Both are effective and work in a different manner.