Elta SEL355/4-1AC Mixed Flow Inline Fan

Start with your duct diameter, then check the airflow and pressure the system needs. The Elta Versaline VL (100mm to 315mm) is a compact centrifugal fan for low-airflow, medium-pressure runs; the Jetflow SJMF (150mm to 355mm) is an EC mixed flow fan balancing airflow and pressure efficiently; and the Multiflow SEL (250mm to 710mm) covers larger commercial and industrial duties with air volumes up to 5.67 m³/s.

They fit directly in-line within a circular duct run. The Versaline VL has 25mm spigots that connect straight onto standard flexible or rigid circular ducting, secured with hose clips and sealed with foil tape — both of which we stock. The Jetflow SJMF and Multiflow SEL connect the same way in their respective sizes, and all three ranges match the standard duct diameters we sell in spiral and flexible form.

Yes — the Versaline VL is designed with integral mounting brackets for ceiling-void installation and works horizontally or vertically, while the Multiflow SEL can be mounted at any angle thanks to its weatherproof IPX4 casing. Compact dimensions across the ranges suit space-constrained projects. Always leave access for maintenance, and for very shallow voids consider the Hideaway SH low-profile box fan instead.

Yes. The Jetflow SJMF uses a brushless EC motor with speed control via potentiometer, 0-10VDC or PWM signal, and ships with a 1.5m mains lead and UK 3-pin plug for straightforward installation. The Multiflow SEL is offered with both AC and EC motor options in single or three-phase. Speed control lets you commission the fan to the exact duty the system needs and cut noise and energy use.

The Versaline VL range is a stock item with next-day availability, and the Jetflow SJMF is typically with you in a few days — the exact lead time shows on each product page before you order. Delivery is free on orders over £400 excluding VAT, so an inline fan ordered together with ducting, hose clips and grilles for the same job often qualifies.