External roof ventilator for use with flat and low pitched lead covered roofs.
| Features | Bird and insect resistant grille. Traditional lead appearance |
| Material | Lead to BS EN 12588 (weathers to a silver-grey appearance) |
| Size | ERV Small: 210 x 140 x 160 mm high plus 335 x 260 mm base surround. Free airflow area 6,000 mm², including drain-out slotERV Large: 405 x 140 x 160 mm high, plus 530 x 260 mm base surround. Free airflow area 12,000 mm², including drain-out slot |
| Uniclass 2015 |
| Product Reference | ERV – LargeERV – Small |
| Standard product features | Features: Bird and insect resistant grille. Traditional lead appearance. Material: Lead to BS EN 12588 (weathers to a silver-grey appearance). Size:
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