Mats made of synthetic fibres are used in climate and ventilation systems as well as control boxes.
Pond Filter Media Pads & Media - Webb's Water Gardens
Pond Filters, Rigid Filter Mats
Red Sea | ReefMat 500 Fleece Roller Filter
Washable Filter Mat - Filtgard Industrial Filter
Original filter mats - Pfannenberg
Electrical Panel Filter Mats - Engineered Filtration Systems
Filter Material, Mats & Pads
Filter Mats, Filter Bands and Filter Plates
VILEDON P15 G2 to G4 Filter Mats