Louvered ventilator with rain-proof side blades The Eura-R is a variation of the standard Eura and is designed to incorporate rainproof side blades. The Eura-R is therefore ideal for all-weather day-to-day ventilation. The structure has integrated rain gutters for controlled water drainage. Like the Eura this is product can be customised with a variety of base and flange designs. Applications: atria, shopping centres, industrial buildings, train stations and ports.