the benefit of this disclosure will recognize that the floor tub 14 is formed in various lengths depending upon the sizes of the enclosures that are desired and the size of the space in which the modular kennel system of the present invention is to be erected for this reason although the floor tubs 14 are shown and described in a preferred embodiment as being rectangular in shape floor tubs 14 are also formed with dimensions that are such that the floor tubs are not rectangular for this reason the floor tubs 14 are referred to herein as being u201c substantially u201d rectangular it being recognized from this description that the term u201c rectangular u201d is being utilized for purposes of providing a convenient point of reference to a long dimension defined by the direction in which the gutter 40 runs of the panel 36 of floor tub 14 and that when the qualifier u201c substantially u201d is used with that word the intention is to describe an inventive element that has a length and a width regardless of whether the length is greater than the width or vice versa by comparison of fig5 a and 5b it can be seen that the pitch of the downwardly sloped surface 44 of panel 36 is such that there is a drop off between the sloped surface 44 and the gutter 40 even at the end of panel 36 opposite drain.