The filters E11 and E12 are available in two versions – minipleat and Al separation.

With minipleat (thermoplastic separation), the maximum possible pleat depth is 200 mm, and it can also be installed in deeper frames. With Al separation, uniform air flow is ensured by aluminum separators. Filters with Al separation are usually manufactured with a depth of 150 mm to 292 mm.

The filter media block, in both for Al separation and minipleat, is embedded in the filter frame with two-component polyurethane (PUR) adhesive.

Filters in metal or aluminum frames can be manufactured with a collar on one or both sides. At the customer's request, the filters can be fitted with protective grid on one or both sides.

The filters are incinerable or can be disposed of in municipal waste.