RISJ EXTERNAL LOUVRE
- Can be used in all environments
Outer grille for exhaust air. Same as RIS, but the louvres are formed especially for exhaust air and directed upwards. Exhaust air louvre is designed to be used in equipment for continuous operation. For equipment for intermittent operation, the recommended installation includes either a rain cover above the grille or a drain in the connecting duct, leading out the possibly accumulated water during standstill periods.