Features: 1) High dust holding capacity, 2) Frame:Plastic or Aluminum alloy or Galvanized plate 2) Sturdy structure and good performance under various airflows 3) Large airflow 4) Collecting efficiency: according to BS3920 GB165-85 5) Media: glass fiber 6) Sealant: polyurethane 7) Frame: galvanized sheet metal, stainless steel, aluminum alloy 8) Constructed of ultra-fine, wet resistant, fire retardant glass fiber 9) Special hot melt separators ensure uniform airflow throughout the filter pack with minimum resistance to airflow 10) Uniform spaced pleats ensures maximum utilization of the media resulting in large dust holding capacity 11) OEM orders with customized designs and specifications welcomed Packing: paper carton