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"mm. The base is connected with oil tank manhole via entry seal kits.

SSE 125090  Base 48" x20"

SSE 125091  Base 48"x20"，conductive

SSE 127090  Base 48"x28"

SSE 127091  Base 48"x28"，conductive

SSE 129090  Base 48"x36"

SSE 129091  Base 48"x36"，conductive

SSE 145090  Base 55"x20"

SSE 145091  Base 55"x20"，conductive

SSE 147090  Base 55"x28"

SSE 147091  Base 55"x28"，conductive

SSE 149090  Base 55"x36"

SSE 149091  Base 55"x36"，conductive

SSE 165090  Base 63"x20"

SSE 165091  Base 63"x20"，conductive

SSE 167090  Base 63"x28"

SSE 167091  Base 63"x28"，conductive

SSE 169090  Base 63"x36"

SSE 169091  Base 63"x36"，conductive