Elta SSDL150-1EC-RT Singleflow Centrifugal Box Fan Single Phase EC - 150mm (rectangular spigots and terminal box)

The Elta SSDL150-1EC-RT is a 150mm Singleflow SSDL centrifugal box fan with rectangular inlet and outlet spigots and a pre-fitted terminal box. It moves up to 662 m³/h in free air, 540 m³/h at 200 Pa and still 324 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 3480 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 662 m³/h Speed Controllable What it is best used forWashroom blocks, changing rooms, small meeting rooms and libraries on 150mm duct, in schools, colleges, hotels and offices. At 100 Pa it moves 605 m³/h, roughly 10 air changes an hour in a room of about 60 m³, and it is the most efficient of the three small casing sizes.For a short indoor duct run a basic inline fan is a cheaper choice. 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 150mm 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 SSDL150-1EC (circular spigots), Elta SSDL150-1EC-T (circular spigots with terminal box) and Elta SSDL150-1EC-R (rectangular spigots).Of the three small casing sizes it has the best overall efficiency (48.7% against 37.4% for the Elta SSDL125-1EC-RT) and the lowest noise, 51 dB(A) at the inlet. If you need more than about 600 m³/h, the Elta SSDL200-1EC-RT moves 1026 m³/h at 100