The Aspen® Pumps M4R Tank Pump is an automatic condensate removal pump for heating and air conditioning systems. The Aspen® M4R Tank Pump boasts many exciting features, all of which make it one of the best tank pumps in the field with unsurpassed build quality and performance as a standard. Aspen® Condensate Removal Tank Pump, Automatic, Series: M4R, 135 gph, 20 ft Shutoff Head, 85 W, 115 V AC, 1.6 A, 60 Hz, Surface Mount, 44 dBA, IP24 Enclosure, 11-7/32 in L x 5-21/32 in W x 5-9/32 in H