Yes, the Vapor Pin® sampling device is designed to be installed in the stick-up or flush mount configuration. We recommend the Vapor Pin® sampling device be installed in the stick-up configuration if it will be used for a single sampling event and then removed, and in the flush-mount configuration if it will be left in place for repeated sampling. Plastic flush-mount covers are supplied with the Vapor Pin® Kit, but stainless steel secure covers are also available and provide more protection from damage or tampering. The standard operating procedure (SOP) use of the Vapor Pin® drilling guide and secure cover describes the flush-mount installation procedure. As described in the SOP, the optional drilling guide simplifies flush-mount installation and increases the accuracy of hole depth and location.