While Modern Day Manufacturing makes scores of different models, we typically use the units listed below,

Units	Airwatts	CFM	Water Lift	Amps	Capacity	Sound dB	Brand of MD units.
M92   240vac	943	191	137	13.7	8	75
S5       240vac	866	191	136.4	13.7	12	62
S2       240vac	722	208	95	9.3	12	62
M85b 110vac	650	130	143	11.7	8	72
S2       110vac	554	184	84	16	12	62
B2       110vac	554	184	84	16	12	72
M85      110vac	525	110	123	11.7	8	70
M80     110vac	508	106	120.4	11.6	6	66
M60 RV's	453	119.5	108	10.2	1	72