Abstract: In a stacking tray combination of the kind containing a series of trays overlying one another in vertical spaced relationship and containing support means for holding said trays in that described position, the improvement is characterized by at least a portion of the support means comprising a hollow channel shaped member, which is connected to the side of a tray and which contains an open side portion; and by an insertable key means positioned within said channel shaped member, with said key means containing a key portion for linking said channel member within another portion of said support means; and with said key means further having a surface for closing the open side of said channel shaped member and together with that member simulating a thick solid post. In an additional aspect of the invention a cap is provided for covering the upper end of the channel member to add to the impression of solidness of form.