We do not provide openings on the countertop for sinks.
The finish on the countertop is a UV cured clear protective finish.
This really depends on the scenario but it is usually around 48" when the countertop needs extra support.
It is attached to the wall with construction glue. (not provided)
The Maple butcherblock is 1-1/4 inch thick. The black impact coating is 1-1/8 inch thick. The laminate countertops are 1-1/4 inch thick.
Typically the overhang of the countertop (on the sides) is a 1/2" inch (there is no overhang when next to a wall or tall cabinet) (Read More)