When used In conjunction with the Optrel ABE1P combination filter, these durable disposable pre-filters ensure that the larger particulates are removed first, thus drastically extending the life of the Swiss Air combination filter.
For the perfect performance, the pre-filters should always be pre-loaded into the Swiss Air combination filter cover behind the spark guard and in front of the ABE1P combination filter.
Supplied in a pack of 50.
Genuine Optrel accessory from an authorised partner: 4088.451