Quick Details Efficiency: G4/EU4 Construction: density Filtration Grade: Pre Filter Medium Material: Synthetic Fiber Porosity: 0 Place of Origin: Guangdong, China (Mainland) Brand Name: Longwell Model Number: LWF-300 5-10mm Tickness Green&White color prefilter media /Coarse roll filter mediia or Pad for panel filter This heavy duty synthetic industrial grade media can be delivered in cut pads or rolls. Very useful as blow set or as pre filter pads. Very commonly used in window ventilation units, fan coils, air conditioning installations, kitchen hoods, industrial ventilation systems and as prefilter in paintspray cabins. Advantages: First class filter media imported from "Longwell" Air Filtech Co. Economical reusable filter frame. Progressive density synthetic filter media. High dust holding capacity ensures long service life. Inexpensive, easy to deliver, store, install and dispose. Filters conform to EN 779 & ASHRAE 52.2 test standards. Available Ex-stock. Appliation: Car Plants 2 Wheelers Trucks & Tractors After Market Booths/Body Shops