Basic knowledge of flight case - the U case series. U case can also be called subrack, its to use the bilateral U plate that the equipment can be installed in the u case cove. The standard Flight Case size according to the size of the server = 19 inches (482 mm) wide X high multiples (44.45 mm). 19 inches in width and height to 44.45 mm as the basic unit. 1 u case the width is 19 inches and the height is 44.45 mm.
      The U case of the flight case generally consists of 9 mm plywood or 12 mm plywood with fire prevention board.The Compose built of the U case with Movable cover, U plate installed on both sides of case,suit for the defense equipment.
      The U case may got the commonly used u case,with 9 mm or 12 mm plywood with fire prevention board to suppress.The Bilateral U plate distance between holes and hole is 19 mm.
      The other is Anti-shock Rack Case, the basic structure of Shockproof case is composed of fire prevention board with splint suppression

      At last the Slant Case the basic structure of Slant Case with 9 mm or 12 mm plywood with fire prevention board to suppress and consists of 11 ,12 U or U inclined or 2 U panel.