Does this come with the drain too, and does it require a rough-in valve?
A. This item does include the pop up drain and does not require a rough in valve.
Does this come with the drain too?
A. The Kohler K-10577-4 does not come with the drain.
Is this faucet a California approved faucet.(K-10577-4)
A. The Kohler K-10577-4 is low lead compliant, and is California approved.
When would I need the valve stem extensions?
A. You would purchase valve extensions if installing in thick marble or granite countertops.
Does the faucet have hot and cold designations on the handle caps (ie, "H" or "C" etched into it, for example)?
A. The Kohler K-10577-4 appears to not have any designation.
Does the spout send the water straight down to avoid slashes off the sink?
A. The Kohler K-10577-4 sends the water at a slight angle into the sink.
does this style have a 12inch spread between the hot and cold faucets?
A. The Kohler K-10577-4 can fit a 12" spread. It can fit up to 16".
What hole diameter is required for the center hole?
The hole diameter for the Kohler K-10577-4 can be between 1 1/8" - 2 1/4".
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