The Rooftop 360 Grease Containment System is revolutionizing the rooftop system market. Simple expandable “Flex Frame” design fits fan curbs ranging from 16″- 41″ in diameter. System provides 12″ of rooftop surface protection around the fan curb. System installs easily (approx. 1 hour). Kit comes complete with 8 – 12″ X 58″ filters and all components