Marble Countertop Thickness. When it comes to countertops there are three standard thicknesses that fabrications utilize. The standard thicknesses are 1CM some manufactures actually use 12CM 2CM and 3CM.
1 ¼ inch thick slabs. All measurement tolerances and dimensions are based on plus or minus 25. 6ÃÂÂ or greater or when less than 23 of the countertop is cantered supports are needed.
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6ÃÂÂ or greater or when less than 23 of the countertop is cantered supports are needed. When it comes to countertops there are three standard thicknesses that fabrications utilize. ¾ inch thick slabs. Usually each thickness fits better into a particular application.