NC Bag Filters have a rigid, rust-resistant galvanized steel channel frame that supports a multi-pleated, fine diameter media. The NC Synthetic bag design provides efficiency and dirt retention throughout the life of the filter. High dust holding capacity and large filter media area contribute to a long service life. Unlike most filters, the total filter media area of the filter can be up to 30 times the face area. Each pleat is sewn with a constant length span stitch to ensure continuous throat and pleat configuration. This assures consistent pressure drop and complete media utilization. Every stitch is covered by a hot melt adhesive. All pockets are joined by a mechanical lock that pierces and joins the internal headers together.