Support brackets for countertops which do not have a knee wall or pony wall to mount to are the perfect solution for our Side Wall Countertop Support Bracket.This bracket mounts to the inside of the left or right side cabinet wall. This bracket has a vertical tang which is welded either to the left or right side of the horizontal piece. The angle placement is determined from the front view (where the 45 degree angle is cut.)The Side Wall Hidden Bracket is made of 0.50" thick by 2.5" wide American steel protected with a high quality anti-rust black paint.Brackets are actually sized in length tip to tip; therefore, a 12" bracket is 12" from tip to tip. Vertical tang is not used in determining lengthDimensions for the Side Wall Hidden Bracket:The horizontal part of the Side Wall Hidden Bracket dimensions is as follows:-Lenght: this is the total length of the bracket from tip to tip including space for vertical tang.-Width: 2.5"-Thickness: 0.50"-Listing is for one bracket; no hardware includedDimensions for the Vertical Tang Anchor part Placed on left or right side:-Lenght: 6"-Width: 2.5"-Thickness: 0.25"Hole Diameter: 0.25"How To Determine How May Brackets You Need:-Brackets are actually sized in total length from front tip to back tip. Therefore a 12" bracket is 12" tip to tip with a 2-0.50" by 6" vertical tang welded on the left or right side. Please add in the 2-0.50" for the vertical in overall length.Note: We recommend spacing your brackets 20" apart for maximum countertop protection, therefore, if your countertop is longer than the 20" recommended spacing you can use the Hidden Island Support Bracket, Knee Wall Bracket, or L Bracket in conjunction with this Side Wall Bracket to protect your countertop investment. Bracket Features:-Virtually invisible, gives your granite countertop the appearance of floating.-Non-intrusive. No corbels needed. No knee knocking.-Completely open space allowing room for chairs and legs.-Economical way to protect your countertop investment.-Easy to install-Made of 0.50" thick by 2.5" wide rolled steel-Bracket end has beveled edge for safety.-Screw holes are placed on vertical piece-Made in the USA