High efficiency AH and semi-absolute AR, AS filters.
The SIGMA-BETA range of high efficiency/semi-absolute filters have mini-pleats and are shallow in depth and are designed for installation on air intake grilles. The AH-AS models come in a wide range of sizes with airflows from 65 to 2700 m³/h.
All the filters are made from:
- 69 mm depth extruded anodised aluminium frame, with a micro-expanded aluminium protective screen painted with white epoxy paint;
- Micro-fibreglass, water-repellent, fire-retardant (M1 fire reaction class) filter media, with continuous thermoplastic spacers between the small pleats, and a polyurethane elastomer sealant;
- One-piece polyurethane foam seal.
The filters’ low pressure drop mean the energy consumption of the fan is minimal.
All filters are labelled with their performance ratings.
- Version ATEX II 2 GD T6.