Suitable for harsh, humid environments, HemiPleat® Synthetic is washable and can handle heavy dust loading conditions and/or hygroscopic or sticky dusts. Filter uses lightweight, 100% spun bond polyester media in pleated design that maximizes surface area while maintaining open pleat spacing for optimized dust release during pulse cleaning. Suited for applications up to 160°F, HemiPleat Synthetic comes in standard and nano fiber media versions with MERV 11 and MERV 15 ratings, respectively.