Vapaguard Pads are normally selected according to the volume of the enclosure, with replacement recommended after 12 months. Using a larger pad than the minimum size required may provide additional VPCI capacity and can help maintain protection in demanding applications, but it should not be assumed to extend service life in direct proportion to the size of the pad.
Actual service life will depend on factors including how well the enclosure is sealed, how frequently it is opened, operating temperature, humidity, airflow and the severity of the corrosive environment. Where protection beyond 12 months is required, the application and maintenance interval should be considered individually.