Well, I guess no one here has taken a chance with this bathtub. Smart. Today I returned the toy bathtub and picked up a Sterling Ensemble Curve. What a difference in quality! What I don't understand is if I'm supposed to bed this one in mortar? It would take at least 4" of mortar to reach the bottom of the tub. That sure seems like a lot to me. The guy at the plumbing supply place told me it was unnecessary on this model. What do you think?