L980S 12-L980 Keyed Removable Mullions Intended for general usage, the lockable L980S & 12-L980 Removeable Mullions are constructed of steel and ideally suited for store fronts and schools. For a fire-rated option, specify 12-HCL980. Interested in this product? Contact Us Related products 650A Removable Mullion 980S & 12-980 Removable Mullions EL980 Electrified Keyed Removable Mullion