But they're heavier and more expensive to ship. I doubt it's that hard to make matching lids to spec. The industry makes matching toilet seats separately, after

But they're heavier and more expensive to ship. I doubt it's that hard to make matching lids to spec. The industry makes matching toilet seats separately, after all. It must have something to do with the material. A thread on Reddit suggests a couple possibilities:[1] - porcelain in more anti-bacterial than plastic (is that true??) - a heavy lid offers more sonic insulation of the rather loud hydraulic mechanism (this seems plausible) Man, I did not plan on getting obsessed with toilet lids today. [1] https://www.reddit.com/r/explainlikeimfive/comments/29o5nz/eli5why_are_toilets_made_of_ceramic_instead_of/ https://www.reddit.com/r/explainlikeimfive/comments/29o5nz/e...