Welcome to Keystone

12" & 18"Canyon Stone^™

Click on the grid at right to download a PDF copy which will assist youin calculating material quantity. The grid scale is 1” = 1’. Measure the length and width of your desired patio in feet. Calculate total square footage by multiplying length times the width. Convert this to inches and trace your patio on the grid. Count the units on the grid to see how many of each unit you need for your patio or project. If you want your project to have a straight edge, make sure you purchase extra units to accommodate for this option.

	height	width	depth	weight
18" unit	2"	18"	12"	21lbs
12" unit	2"	12"	10"	10.5lbs
unit weight, color, dimension & availability vary by region

	Project Square Feet (length x width)
	40'	80'	100'	150'	240'
Units (each)	30	60	75	112	178