... 1.High quality 2.Easy control 2012 Hot Type! Manual Push Plug-In Line Frameworkwelded with 40 × 40 ×1.5mm rectangle ... , width B = 1200mm.Guide railSpecial aluminum slide rail for Manual Push Plug-In Line, with interval 0-350mm, adjustable, arranged at ... , arranged at two sides.Operation cardOperation cards will be placed on the lamp stand, made of H-shape aluminum guide rail ...