The Little Giant 513118 BB3636CD3V3D is a basin and cover assembly for Duplex Systems. It does not include the pump. With an appropriate pump installed, it is used for the collection and transfer of sewage, effluent, drainage or seepage water. It has a discharge size of 3” (76 mm). This Little Giant 513118 BB3636CD3V3D Basin and Cover Assembly measures 36” x 36”. It consists of a one-piece, seam-free fiberglass basin and a one-piece steel cover. It includes bolt-on flanges and a 4” cast iron inlet hub. Its vent is 3” (76 mm) in diameter. For more details, you can refer to the specification sheet. The Little Giant 513118 BB3636CD3V3D Basin and Cover Assembly is covered by a limited warranty for a period of 24 months. Little Giant has proven their excellence for over 70 years by producing reliable pump solutions, packaged system options, and accessories.