A storage rack, flexible moment frame for field installation, the moment frame adapted for receiving pallets with stored goods thereon, the moment frame comprising: first, second, third and fourth angular, hollow steel, spaced apart vertical posts (20, 22, 24, 26), lower ends of the vertical posts (20, 22, 24, 26) mounted on horizontal base plates, the base plates adapted for receipt on a floor surface, the vertical posts (20, 22, 24, and 26) having a square cross-section of 7.62 by 7.62 cm and four closed side along a length thereof for added strength during the flexing of the moment frame; a first set of load beams, the first set of load beams including a first angular, hollow metal, horizontal load beam, opposite ends of the first load beam releasably attached to the first and second vertical posts (20, 22), the first set of load beams including a second angular, hollow metal, horizontal load beam, opposite ends of the second load beam releasably attached to the third and forth vertical posts (14, 26), the first and second load beams parallel to each other and disposed at the same height above the floor surface; and a first set of cross beams, the first set of cross beams including a first angular, hollow metal, horizontal cross beam, opposite ends of the first cross beam symmetrically and releasably attached to the first and third vertical posts (20, 24), the first set of cross beams including a second angular, hollow metal, horizontal cross beam, opposite ends of the second cross beam symmetrically and releasably attached to the second and forth vertical posts (22, 26), the first and second cross beams parallel to each other and disposed at the same height above the floor surface, wherein the opposite ends of the first and second load beams include "L" shaped connectors for receipt around a portion of the vertical posts (20, 22, 24, 26) and bolted thereto; and the opposite ends of the first and second cross beams include "U" shaped saddle connectors for receipt around a portion of the vertical posts (20, 22, 24, 26) and bolted thereto, "U" shaped saddle connectors providing a symmetrically load connection between the first and second cross beams and the vertical posts (20, 22, 24, 26); the "U" shaped saddle connectors on the opposite ends of the cross beams and the "L" shaped flange connectors on the opposite ends of the load beams provide for bending resistance against the sides of the vertical posts (20, 22, 24, 26), the bending resistance allows for increased flexing of the moment frame. first, second, third and fourth angular, hollow steel, spaced apart vertical posts (20, 22, 24, 26), lower ends of the vertical posts (20, 22, 24, 26) mounted on horizontal base plates, the base plates adapted for receipt on a floor surface, the vertical posts (20, 22, 24, and 26) having a square cross-section of 7.62 by 7.62 cm and four closed side along a length thereof for added strength during the flexing of the moment frame; a first set of load beams, the first set of load beams including a first angular, hollow metal, horizontal load beam, opposite ends of the first load beam releasably attached to the first and second vertical posts (20, 22), the first set of load beams including a second angular, hollow metal, horizontal load beam, opposite ends of the second load beam releasably attached to the third and forth vertical posts (14, 26), the first and second load beams parallel to each other and disposed at the same height above the floor surface; and a first set of cross beams, the first set of cross beams including a first angular, hollow metal, horizontal cross beam, opposite ends of the first cross beam symmetrically and releasably attached to the first and third vertical posts (20, 24), the first set of cross beams including a second angular, hollow metal, horizontal cross beam, opposite ends of the second cross beam symmetrically and releasably attached to the second and forth vertical posts (22, 26), the first and second cross beams parallel to each other and disposed at the same height above the floor surface, wherein the opposite ends of the first and second load beams include "L" shaped connectors for receipt around a portion of the vertical posts (20, 22, 24, 26) and bolted thereto; and the opposite ends of the first and second cross beams include "U" shaped saddle connectors for receipt around a portion of the vertical posts (20, 22, 24, 26) and bolted thereto, "U" shaped saddle connectors providing a symmetrically load connection between the first and second cross beams and the vertical posts (20, 22, 24, 26); the "U" shaped saddle connectors on the opposite ends of the cross beams and the "L" shaped flange connectors on the opposite ends of the load beams provide for bending resistance against the sides of the vertical posts (20, 22, 24, 26), the bending resistance allows for increased flexing of the moment frame.