Basically, shower grates can be installed in 2 ways: against the wall and floor-mounted. But they are most commonly placed in the corners. Some people like to put a grate in the middle of the shower room floor, especially if they have a large shower area. Regardless of where the shower grate is placed, the floors should be sloped towards it to ensure that all water drains. When the inclination toward the channel isn't adequate or non-existent, water builds up and causes flooding in the bathroom.