Rainbow Vacuum Water Pan Bowl For E, E2 Series, E2 Silver/Gold Series and eSERIES, BIGGER SIZE- 4 Quart R7895This larger 4 quart water pan has several benefits. It fits models E2 Type 12 (e2 Silver, Gold), and E 2 (e SERIES). NOTE: Does NOT fit the Black Series Dolly which has 5 wheels and not 4 like the models above! It is designed for heavy duty jobs when the standard water pan gets thick with dirt very quickly. Once the water gets thick, you begin to lose the filtering benefit of water. Use this larger water pan to allow twice as much water for the dirt