980S & 12-980 Removeable Mullions Intended for general usage, the 980S and 12-980 Removeable Mullions are constructed of steel and ideally suited for store fronts and schools. Available with a fire rating. Downloads Catalogs Instruction Manuals Promotional Sheets Product Templates Parts Manual Interested in this product? Contact Us Related products EL980 Electrified Keyed Removable Mullion 980 & 980A Removable Mullions 12-HD980 Heavy Duty Steel Mullion