Elta SSDL400-1EC-RT Singleflow Centrifugal Box Fan Single Phase EC - 400mm (rectangular spigots and terminal box)

The Elta SSDL400-1EC-RT is a 400mm Singleflow SSDL centrifugal box fan with rectangular inlet and outlet spigots and a pre-fitted terminal box. It moves up to 4414 m³/h in free air, 3722 m³/h at 200 Pa and still 2390 m³/h at 500 Pa, the highest pressure in Elta's published table.A single phase EC external rotor motor (220-240V 50/60Hz) drives a backward curved impeller balanced to ISO1940-1, at up to 1620 rpm with an integrated commissioning control for setting speed. The 1.2mm galvanised steel casing is acoustically lined and suitable for external mounting, the IP44 motor has sealed for life bearings and runs in air from -20°C to +60°C, and Elta backs it with a 12 month warranty. 1 Phase EC Motor Up to 4414 m³/h Speed Controllable What it is best used forHigh volume ducted extract or supply on 400mm duct in factories, industrial units, warehousing, commercial kitchens and large office floors. At 100 Pa it moves 4090 m³/h, and it holds 2390 m³/h even at 500 Pa, which suits systems with filters, heater batteries and long runs.At 64 kg it needs proper support and access; check the void or roof space against Elta's dimensional drawing first. It is not suitable for corrosive or explosive atmospheres, and the airstream must stay within -20°C to +60°C.Why choose this over alternativesThis is the 400mm SSDL with rectangular spigots and terminal box. Pick this version when the fan connects to rectangular ductwork and you also want a pre-fitted terminal box for a quick, tidy electrical connection. The fan, motor and performance are identical across the four versions, so the choice is only about duct shape and wiring. The same size is also available as Elta SSDL400-1EC (circular spigots), Elta SSDL400-1EC-T (circular spigots with terminal box) and Elta SSDL400-1EC-R (rectangular spigots).It shares its casing size with the Elta SSDL500-1EC-RT. The 500 moves more at low and medium pressure (5184 against 4090 m³/h at 100 Pa), but above about 400 Pa the 400 pulls ahead and gives