Contain three parts ①internal lid, ②corbel, and ③base. The internal lid is locked onto the corbel tightly to prevent the water penetration. The opening diameter of corbels is 31 1/2". The solid base can be cut according to those actual requirements on site.

SSB 125090  Base 48"x20"

SSB 125091  Base 48"x20"，conductive

SSB 127090  Base 48"x28"

SSB 127091  Base 48"x28"，conductive

SSB 129090  Base 48"x36"

SSB 129091  Base 48"x36"，conductive

SSB 145090  Base 55"x20"

SSB 145091  Base 55"x20"，conductive

SSB 147090  Base 55"x28"

SSB 147091  Base 55"x28"，conductive

SSB 149090  Base 55"x36"

SSB 149091  Base 55"x36"，conductive

SSB 165090  Base 63"x20"

SSB 165091  Base 63"x20"，conductive

SSB 167090  Base 63"x28"

SSB 167091  Base 63"x28"，conductive

SSB 169090  Base 63"x36"

SSB 169091  Base 63"x36"，conductive