metal basket set into the tub floor that creates a water-tight connection between the tub surface and the rest of the drain ...

Close it and fill the tub with about an inch of water to make sure it holds ... It won't dissolve anything, but if you cover the drain and overflow hole, it may create enough mechanical force to push ...

Bathroom must haves, Large, Universal Fit: Diameter 6 inches, Drain cover sink use in the kitchen, Bathtub and Laundry. ★ Pack of 2, 6 inches white and gray soft rubber sink cover, washbasin ...