We are installing mats at all the building's entrances. However, one of the entrances used for catering opens outwards, due to space issues, the mat cannot be installed directly next to the entrance, is it possible to leave a space of 3 ft away from the door's exit point and install the mat after that? This means that the person entering will walk over the mat for a distance of 10 ft, then he will walk over the ground for 3 ft before entering.