Arts N Crafts Iron Corbel 1.5-Inch Wide Color:Gold Pictured: Charlotte Iron Shelf Bracket

Pictured: Charlotte Iron Shelf Bracket with Black Finish

Now subtract 3" (this is the ideal amount of countertop hanging past the bracket)

To figure out how many corbels you need lets start with 2 corbels at each end of the countertop set 4" to 6" inches in

which is always the safer direction

Keep in mind

Arts N Crafts Iron Corbel 1.5-Inch Wide Color:Gold Pictured: Charlotte Iron Shelf BracketThis is a decorative Iron Corbel used to provide support for Countertops including Granite Countertops, Marble, Corina, Concrete, Butcher block & all other countertop types. The Arts N Crafts corbel is available in 6 Bracket Sizes (depth x height): 5 x 7 6 x 8 7 x 9 8 x 10 9 x 11 10 x 12. Choose from 6 Custom iron finishes: Matte Black, White, Gold, Aged Bronze, Aged Pewter & Clear Over Raw Iron. Each corbel will support 275lbs when properly mounted