Can the Vapor Pin® sampling device be used in slabs of any thickness?

The Vapor Pin® sampling device is designed to be used in slabs that are at least three inches thick. If the Vapor Pin® sampling device will be installed as a flush mount, we suggest that the slab be at least four inches thick. Because the Vapor Pin® sampling device does not have to extend to the bottom of the slab, there is no maximum slab thickness, provided your drill bit is long enough to drill into the sub-slab. A 5/8-inch drill bit with a length of 24 inches covers most situations.