is the toilet tank lined?A. The Kohler K-3818 tank does not have an insulated liner in it.
does this toilet come with a seat?A. No, the seat does not come included. You will need the K-4650 or the K-4636.
what soft close seat model # should I order for K-3818? Is Siphon Jet flush system better than Gravity flush system?A. The Kohler K-3818 is compatible with the K-4733 soft close seat. Siphon jet is a more powerful flushing system so it will keep bowls cleaner while being louder at the same time.
What is the difference(s) between the 3818 & 3819?A. The Kohler K-3818 and the K-3819 have slightly different designs to them. If you look at the two tank lids you can see a difference.
Low Flow Toilet RestrictionsThis item cannot be shipped to the following location(s): CA, TX
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