What does anti-stacking provisions mean?

anti-stacking provisions meaning in Insurance Dictionary

Anti-stacking arrangements are intended to prevent the application of several units of deductibles or multiple units of limitations to a solitary loss event. They have been sometimes incorporated into insurance policies addressing exposures which will take place over-long times, causing protection under multiple guidelines. They stipulate that, such an event, one plan restriction or one deductible (as opposed to the limitation or deductible under each policy) relates to the event.