Ok I am going to build a 16 qt rack system out of the #1644 tub my plan is 1 tub per row the dimensions for this tub is 16 5/8 "L × 11 3/4 "W × 7 " H so im guessing 12"W × 17"L is this right? also im going with 3/4" melamine but what should the sides measure im guessing 47 1/4".