NIF1023The Sanicubic Classic is a pre-assembled heavy duty grinder pump that meets the demanding needs of commercial and residential sewage applications. The two grinder system made of stainless steel liquefies solids prior to being passed through the 1 1/2"" discharge. It s designed to handle multiple waste fixtures for applications such as single residential or group homes, commercial buildings, schools and more. This new system consists of two 1-HP motors housed inside a compact but high durable plastic enclosure. Each independently operating grinder has its own high-performance grinding system.One of the many features of the Sanicubic Classic is the smart-pump operation. A single pump is able to handle up to 50 gpm. If the incoming rate is higher than the discharge rate, the pump automatically signals the ""overload"" stage. This will activate the second pump and both pumps will operate simultaneously until the condition is alleviated. When both pumps are in operation, the discharge rate increases roughly 80pct. In this event, a visual alarm LED on the unit will switch to red. Note that the effluent pipe leading into the pump has to be installed with the required 1/4"" per foot gravity flow towards the pump unit. The wastewater from other sanitary fixtures is discharged into the Sanicubic Classic via five 1 1/2"" or 4"" inlets on either side of the housing and on the top of the enclosure. The internal discharge pipes come equipped with check valves that prevent back flow into the unit. Isolating valves must be installed on waste inlets and on the discharge pipe to ensure that any service/maintenance may be carried out safely. This unit has been designed with a vent connection on the lid. All plumbing codes require connection to a vent system. The vent system should be a two-way air vent. The use of mechanical vents, air admittance valves, or similar devices are not permitted as these are considered one-way air vent systems. Features: * Duplex system * Can handle up to 60 gallons per minute from several fixtures * Vertical pumping up to 36 feet and 328 feet horizontally * Easy installation above the floor * Dual motor for absolute reliability and power * Thermally protected Specifications: * Manufacturer provides two year warranty * Overall dimensions: 16.5"" H x 23.75"" W x 19.25"" D