Trion 35 Center pan for Trion 707, 707sm, 707tw, 707u. Overall measures 10½ diameter, 2¼ inch height.Includes (4) rubber mounting feet and (1) grommet for the motor wire hole.The mounting feet are fasten with glue (not included).See the instructions for installing the impeller with a 1/16" gap: Trion Impeller Installation (1 page, 70k pdf).