Pressed in > Ventilation grate pressed in mesh (S) > Ventilation grate pressed in, skewed strip (L) > Ventilation grate pressed in – adjustable (R) > Ventilation grate pressed in round ceiling mounted (OS) > Ventilation grate pressed in round wave (OF) > Ventilation grate pressed in round strip (OL) > Ventilation grate pressed in round – adjustable (OR)