Sliding arm FD495 Height-adjustable by 2 mm for tolerance. Concealed fastening screws. Specifications Hold open function No Door leaf Single leaf Type of product Mechanical guide rail Close Carry bar FD102Carry bar for fire door closing systems on double doors. Mounting plate DC117Angle mounting plate for double door fire door closing systems. Mounting plate DC112Angle mounting plate for FD110 and FD111.