650A Removable Mullion Constructed of aluminum, the 650A Removable Mullion includes 651 Stabilizers and imbedded Weather Stripping. Downloads Catalogs Instruction Manuals Promotional Sheets Product Templates Parts Manual Interested in this product? Contact Us Related products HC-L980 & 12-HCL980 Keyed Removable Mullions 988 Surface Bolt Kit 980 & 980A Removable Mullions