A multi-stage grease filter is a filter that has a primary filter and additional stages of filter downstream of the primary filter. ExtractAire™ HVCMS Filters are engineered for use in CKV hoods requiring a filter that is Listed to the UL 1046 Standard. The ExtractAire™ HVCMS Filter design and construction provides the ultimate fire protection and the highest level of grease extraction available in CKV Grease Filters. ExtractAire™ HVCMS Filters can withstand the harshest CKV environments. The HVCMS Filter assembly incorporates Streivor’s sustainable, organic, replaceable, and biodegradable Absorb Filters