Cabinet having cushioned side frames

A cabinet, comprising:

• a containing structure including a plurality of drawers, a first front corner post, a second front corner post, a rear panel, a first side panel, and a second side panel;
• a first side frame secured to the first side panel and including first and second hollow corner posts attached to the first front corner post and the rear panel respectively, a top bar interconnecting upper portions of the first and second hollow corner posts and secured to the first side panel, a bottom bar interconnecting lower portions of the first and second hollow corner posts and secured to the first side panel, a board disposed between the first and second hollow corner posts, the top bar, and the bottom bar, and a push handle secured to both the top bar and the first side panel;
• and
• a second side frame secured to the second side panel and including first and second hollow corner post members attached to the second front corner post and the rear panel respectively, a top bar member interconnecting upper portions of the first and second hollow corner post members and secured to the second side panel, a bottom bar member interconnecting lower portions of the first and second hollow corner post members and secured to the second side panel, a rack secured to both the top bar member and the second side panel, a plurality of sets of two positioning members secured to the first and second hollow corner post members respectively, and a plurality of baskets secured to the sets of the positioning members respectively;
• wherein each of the first and second hollow corner posts or each of the first and second hollow corner post members includes a first inner surface abutted on one of the first and second side panels, a second inner surface perpendicular to the first inner surface and abutted on either one of the first and second front corner posts or the rear panel, a groove at a joining portion of the first inner surface and the second inner surface and complimentarily engaged with one of four corners of the containing structure, a shoulder at an end of the first inner surface distal the groove and engaged with an end of the top bar, an end of the top bar member, an end of the bottom bar, or an end of the bottom bar member, a cavity adjacent to the shoulder, a first inclined outer surface adjacent to the cavity, a first vertical channel defined by the first inclined outer surface, the shoulder, and the cavity, a first flat outer surface extending from the first inclined outer surface and parallel to the first inner surface, a second inclined outer surface extending from the first flat outer surface, a second vertical channel defined by the second inclined outer surface, the first flat outer surface, the first inclined outer surface, the cavity, the shoulder, the first inner surface, and the groove, a second flat outer surface extending from the second inclined outer surface and parallel to the second inner surface, a third inclined outer surface interconnecting the second flat outer surface and the second inner surface, and a third vertical channel defined by the second inclined outer surface, the second flat outer surface, the third inclined outer surface, the second inner surface, and the groove;
• wherein the first and second hollow corner posts are configured to fasten the top and bottom bars together at the cavities using fasteners;
• and
• wherein the first and second hollow corner post members are configured to fasten the top and bottom bar members together at the cavities using fasteners.