Air Filter Roll, 90 ft Nominal Width, 30 in Nominal Height, MERV 7, Polyester/ OVERALL WIDTH: 30.0 INCHES NOMINAL BODY OVERALL LENGTH: 1080.0 INCHES NOMINAL FILTERING MEDIA DESIGN: ROLL TYPE SINGLE FILTERING MEDIA RESPONSE PART NAME ASSIGNED BY CONTROLLING AGENCY: AIR FILTER ROLL MATERIAL: POLYESTER FILTERING MEDIUM STYLE DESIGNATOR: A22 ROLL TYPE W/HOLLOW CORE