A frame for furniture, particularly for display cabinets and showcases, having profiles which form the frame walls and having corner pieces to which the profiles are connected at profile-corner piece connections. At least one profile abuts bluntly on an associated end surface of a corner piece and is pulled thereagainst by at least one screw on the associated end surface. Such screw has its head resting on the corner piece and is screwed into the butting profile. The corner pieces are of hollow construction and have on at least one end thereof an end wall which the screw grips. The corner pieces have, near the screw, a lateral opening through which the screw is accessible in a direction transverse to the longitudinal axis of the screw.