Air-flow grilles

Ventilation grilles double sides, have the function of equalizing-flow. They are part of the ventilation system to ensure flow between rooms and through buildin...

Ventilation grilles double sides, have the function of equalizing-flow. They are part of the ventilation system to ensure flow between rooms and through buildin...

Ventilation grilles double sides, have the function of equalizing-flow. They are part of the ventilation system to ensure flow between rooms and by building par...