Broan Filter Kit for Mantra/Osmos/Glacier Series Non-Ducted Range Hoods - HPF30Keep your non ducted Broan range hood running at its best with this replacement filter kit. Charcoal filters are made from the highest quality materials to provide the longest life possible and keep your kitchen air clean and fresh. These filters also feature an indicator strip that will change from dotted lines to wide solid lines as a signal to replace the filter.