Frame for framing pictures

A frame in combination with a picture element, comprising a plurality of frame sections, wherein each frame section has a bottom surface, a channel for receiving corner brackets, an upstanding screen wall on said bottom surface, an external side wall connecting the bottom surface with a visible front surface, and a clear gap between the front surface of the frame section and the screen wall, said visible front surface extending from the external side wall towards the screen wall, said screen wall having a projecting holding lip and a subjacent supporting lip for a picture element, said screen wall extending a distance down past the supporting lip to the bottom surface, and said clear gap between the front surface of the frame section and the screen wall being of a smaller width than said distance from the holding lip to the bottom surface, wherein said channel is formed by a pair of L-shaped members and a portion of the bottom surface.