by wall panels 22 a 22 d at the ends of side wall panels 22 a 22 c are rear folding tabs 25 a 25 c and front folding tabs 26 a 26 c connected along the top edge of rear wall panel 22 b is top panel 24 and its side panels 23 a 23 c 23 d when constructed the folding panels 29 a 29 b of front wall 22 d are folded inward so that panel 29 a is adjacent and interior to front wall 22 d while panel 29 b is frictionally engaged along the forward portion of the base 21 tabs 26 a 26 c folded inward and are inserted into the channel formed between front wall 22 d and panel 29 a while rear tabs 25 a 26 c are folded inward of the rear wall 22 b the top 24 with its side panels can be folded downward so the side panels 23 a 23 c 23 d are aligned inward of the side walls 22 a 22 c 22 d while the base type blank 20 forms a carton 20 u2032 with a solid base 21 the corner portions with front and rear tabs 25 a 25 c 26 a 26 c are not in the form of gussets and fluid leakage may occur through those corner portions a different base type blank 30 that may be utilized in some aspects of the invention is illustrated in fig3 and when utilized with folding aid 50 shown in fig4 a 4 c provides for the rapid construction of a carton 30 u2032 shown in fig5 d with a solid base 31 and outfold gussets at the corners that provide structural strength.