The Aspen Max Hi-Flow (FP3349) is the quietest and safest pump in its class for larger commercial units. 1.7 litre tank, 550L/h max flow at 0m head, IP24 splash-proof rating. Built-in spirit level, easy-access tank lid, Plug & Play connection. 230V AC, 50Hz. Suitable for cassette, floor, ducted and vertical air conditioning units.