Indoor recessed mats for schools and colleges are usually aluminum rollup mats, footgrilles, heavy duty carpet matting or carpet tiles.  Aluminum footgrilles are used when a deep pit is present to help retain large levels of moisture and debris.  Shallow pit recesses of 3/4" or less are candidates for aluminum rollgrates, rollup mats, heavy duty carpet matting and carpet tiles.  It is important that all recessed mats provide a smooth transition from surrounding walk surface to the top of the mat to prevent trip hazards.  Indoor recessed mats can be completely inside the entrance or in the vestibule.  Vestibule floor mats that are recessed play the role of Zone 2 matting and should focus on scraping AND absorption.  If you need assistance choosing the best indoor recessed mats for your school, give us a call.