From standard panel and bag filters to HEPA and activated carbon, we supply filtration for commercial buildings, cleanrooms, food production and industrial process air.
Coarse and fine grade pre-filters for AHUs and fan coil units.
Rigid and soft bag filters in ePM10 to ePM1 grades.
H13–U16 filters for cleanrooms, healthcare and laboratories.
Odour control media and made to measure sizes.
Where a standard product will not fit, we manufacture filter housings and filtration units to whatever specification is required — including access sections, frames and mounting arrangements.
All air filter media supplied by DM O'Shea comply with EN ISO 16890 global testing criteria to ensure maximum indoor air quality (IAQ) and lowest specific fan power (SFP).
| Filtration Group | Efficiency Rating (Particulate Size) | Typical Applications | Media Configuration |
|---|---|---|---|
| ISO Coarse | Captures particles > 10 µm (sand, hair, large dust) | Pre-filters for AHUs, agricultural plant, fan coils | Pleated synthetic, G4 washable media, card/metal frame |
| ISO ePM10 | Efficiency ≥ 50% on particles ≤ 10 µm | Commercial offices, public buildings, industrial extract | Multi-pocket bag filters, compact rigid v-bank cells |
| ISO ePM2.5 | Efficiency ≥ 50% to 85% on particles ≤ 2.5 µm | Hospitals, pharmaceutical facilities, secondary AHU stages | High-efficiency microglass bags, synthetic deep-pleat cells |
| ISO ePM1 | Efficiency ≥ 50% to 90%+ on sub-micron particles ≤ 1 µm | Semi-conductor manufacturing, cleanrooms, sterile processing | Nanofibre & micro-glass high-density pleat packs |
| HEPA / ULPA | 99.95% (H13) to 99.9995% (U15) MPPS retention | Operating theatres, bio-containment, toxic dust extract | Aluminium separated glass-fibre, gel seal gaskets |
Tell us what you need and our engineering team will come back with availability, specification advice and a competitive price for Ireland and the UK.
