the panel 12 is slid into a u shaped section such as the section 31 of the corner member 16 as shown in fig3 then the panel 15 is slid into the u section 30 the panels 13 14 and the corner member 18 are assembled in the same manner then the panels 12 and 13 are joined by the corner member 17 and the panels 14 and 15 are joined by the corner member 19 the stand assembly is now complete alternatively the panels may be inserted into the corner members by pushing a panel laterally into a u shaped section the inner arms 30 39 41 39 of the u sections preferably are made longer than the outer arms to aid in guiding the panels during such insertion the stand may be collapsed to the flat configuration shown in fig2 and stored or placed in a vehicle for transport when ready for installation the stand is opened from the flat configuration of fig2 to the open configuration of fig1 in some applications the stand is now ready for use however if desired some additional member may be utilized to maintain the stand is the desired open configuration this could be an item positioned within the stand such as the reservoir 22 alternatively it could be.