<p>This larger, four-quart Water Basin (Pan) for the D4 and D3 model Rainbow. Quickly tackle heavy-duty jobs while changing the water less often.</p> <p>The larger water pan has several benefits:</p> <ul> <li>Designed for heavy duty jobs when the standard water pan gets thick with dirt 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 to filter through.</li> <li>The larger water pan is a great benefit when you are doing water pickup. With use of either a standard hose or the AquaMate accessory, you will cut your trips in half!</li> <li>We highly recommend this item if you have pets that shed heavily.</li> </ul> <p>Discontinued item number include R1743 (D3).</p>