FEATURES UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" AN EFFICIENT WAY OF ENCLOSING THE SIDES AND BACK OF ALL SHELVES IN A UNIT TO CONTAIN STORED CONTENTS FOR USE WITH 74"" POST HEIGHT AND 21""/24"" SHELF WIDTHS SLOT OPENING 3"" W X 3.875"" H DESIGNED TO WORK WITH METROMAX I METROMAX 4 AND METROMAX Q SHELVES MOUNTING CLIPS INCLUDED