SPECIFICATIONS   INSTALLATION   STONE SIZES   SELECTING A PATTERN   CLEANING STONE SIZES DUFFERIN STONE is a modular masonry veneer with a wide variety of stone sizes which allows you to customize the appearance of each installation. Product heights of 4 inches, 6 inches and 10 inches are each available in five different lengths in two inch increments as follows: Stones of 4" and 6" height are shipped on the same pallet with a square foot ratio of 40% and 60% respectively. Stone face dimensions are nominal and include a variable joint width from 3/8" to 3/4". All stones are approximately 3.5" in depth.