A seal for a bathing enclosure includes a first structure having a first flange extending from an upper end thereof and a second structure having a second flange extending from a lower end thereof and a channel. The channel includes a first side surface extending upward from an end of the second flange, a second side surface opposing the first side surface, extending upward from the second flange, and an upper surface opposing the second flange, extending between the first side surface and the second side surface. The second flange defines a slot between the first side surface and the second side surface and the second flange is configured to interface with the first flange.