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rdesmond 01-24-2010 06:25 PM

Undermount Sink
I just purchased a granite vanity top for my downstairs bathroom very cheap. The vanity cutout for the undermount sink measures 15" X 11". I am having trouble trying to find an undermount sink for this measurement. This is the first undermount sink that i want to put in. I think I am getting confused with the measurements. Does the undermount sink have to be those exact measurements or can it be a litttle bigger? Please help I am getting very frustrated with this little project!!! Thanks

Ishmael 01-24-2010 07:52 PM

The measurements of the bowls are usually in reference to the outside dimensions. The rim itself is typically about an inch wide (give or take), so the inside diameter will be about 2" less than the stated dimensions - a sink that's listed as 17" x 14" will have an interior dimension of (roughly) 15" x 12".

You should ask the dealer that sold you that top what particular sink (brand and model) that was cut out for. The basic Kohler oval undermount sink is the Caxton, and it comes in a few different sizes, but none that would fit particularly well for the dimensions you gave; The cut-out in your top is a little too long for the Caxton to fit properly. You'd have a 1/2" recess at both the front and back, and no recess at all at the sides. You want to have a little bit of a recess all around to ensure none of the unglazed rim is visible from the top.

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