Cantilever shelving

Claim 1

A KNOCKDOWN TYPE STACK COMPRISING VERTICAL AND HORIZONTAL POSTS JOINED TOGETHER AND SHELVES SUSPENDED FROM THE POSTS, SUPPORTING STRUCTURES DISPOSED IN END-TO-END RELATION EACH COMPRISING A BASE CHANNEL INCLUDING BASE AND SIDE LEGS WITH THE BASE LEGS BEING SHORTER IN LENGTH THAN THE SIDE LEGS PROVIDING RECESSED AREAS AT OPPOSITE ENDS OF THE BASE LEG BETWEEN THE SIDE LEGS, UPRIGHT CHANNELS SECURED IN ASSEMBLY WITH SAID BASE CHANNEL AND DISPOSED IN THE RECESSED AREAS AT OPPOSITE ENDS OF THE BASE CHANNEL WITH THE UPRIGHT CHANNELS AT OPPOSITE ENDS OF ONE OF SAID SUPPORTING STRUCTURES CONFRONTING UPRIGHT CHANNELS ON ADJACENT SUPPORTING STRUCTURES DISPOSED ON OPPOSITE ENDS THEREOF, THE UPRIGHT AND THE HORIZONTAL CHANNELS COMPRISING SAID SUPPORTING STRUCTURES AND COOPERATING TOGETHER WHEN SAID SUPPORTING STRUCTURES ARE DISPOSED IN END-TOEND RELATION PROVIDING CONTINUOUS UNINTERRUPTED VERTICAL POST HOLDERS EXTENDING TRANSVERSELY ON OPPOSITE SIDES OF THE BASE LEG AND WITH A PLURALITY OF SAID VERTICAL POSTS DISPOSED IN SAID HOLDERS AT OPPOSITE ENDS OF EACH OF SAID SUPPORTING STRUCTURES FOR GROUND ENGAGEMENT SO AS TO FUNCTION AS COLUMNS, AND DETACHABLE MEANS FOR SECURING THE POSTS TO SAID UPRIGHT CHANNELS.