Elta CFHT450/4-3AC (CFHT74/450-4-3) High Temperature Roof Mounted Centrifugal Fan

An ATEX fan is built and certified for areas where explosive atmospheres may be present — spray booths, solvent stores, certain process extract systems and similar hazardous zones. The Elta Revolution SLCX is an ATEX-rated long cased axial fan designed under the 2014/34/EU directive, with heavy gauge steel construction and carbon-filled anti-static impeller blades. If your risk assessment zones the area, a standard fan is not acceptable.

The Revolution SLCX carries ATEX construction code Ex h IIB+H2 T4 Gb, designed for hazardous areas with explosive atmospheres under the 2014/34/EU directive. It is available in seven sizes from 315mm to 710mm, delivering air volumes up to 6.8 m³/s and static pressures up to 872 Pa, for operating temperatures up to +40°C. Always confirm the rating against your site’s zone classification before ordering.

The Elta Clearflow CFHT is designed to handle clean, grease-laden or contaminated air, with the motor positioned outside the airstream to protect it from contamination and airstream temperatures supported up to 120°C. It’s a roof-mounted centrifugal unit whose vertical discharge projects odours and exhaust away from occupied areas — a common arrangement for kitchen extract systems discharging at roof level.

Yes — it can be mounted at angles of up to 15° for direct installation on pitched roofs, and a wind guard is fitted as standard to reduce noise and prevent unwanted draughts. It comes in six sizes from 350mm to 630mm, delivering up to 3.819 m³/s and static pressures up to 1,044 Pa, with speed control available via an inverter drive.

Each product’s Downloads tab carries the manufacturer’s technical data sheet and installation and maintenance documentation, which detail the construction standards, ATEX coding and electrical data your project file needs. Units are manufactured to BS EN ISO 9001 with airside performance tested to ISO 5801. For zone-specific selection advice or documentation queries, call us on 0116 246 0031 before ordering — hazardous area selection is worth checking twice.