Floating shelves with a desired industrial look is achieved with our Regular Shelf Bracket. This strong bracket is used for smaller shelves or may also be used for countertops where the granite has already been installed. The Regular Shelf Bracket is ideal for use with glass shelving setups.This bracket is designed to be used on the outside of sheetrock or cabinets.• Please do not confuse to Regular Shelf Bracket for the L Countertop Support Bracket. The L Countertop Support Bracket is used before granite is installed and is a ''hidden'' bracket. • How to determine the length of bracket:This bracket will be mounted to the wooden studs or the equivalent, from the front, to support a shelf or countertop. Measure the length of the shelf or countertop you are installing, for this example we''ll use 12". Subtract 3". This subtraction is to stay away from the outer edge of the countertop, which is usually 2-4". This gives us 9" total. You can order either an 8 or 10" horizontal. The vertical length determines the number of holes used to mount the brackets. We recommend spacing the brackets out 16 to 20" apart.-4" vertical length has 3 holes.-6" vertical length has 4 holes.-8" vertical length has 5 holes.-10" vertical length has 6 holes.Dimensions of the Regular Shelf Bracket:-Length - Select your chosen length when ordering bracket-Width - 2.5"-Thickness - 0.50"• Vertical width and thickness are the same as the horizontal•