Designed specifically for graphite dust control, the Wynn “G” series flanged cartridges from Wynn Environmental are directly interchangeable with filters commonly used in vibrating-type dust collectors. These surface-loading, Merv 15 nanofiber filters have an open-pleat design for dust release during the cleaning cycle. The high-filtration efficiency reduces dust bypass, and there is no need for warp-around pre filters, the company says.