Previous Next DescriptionPhotosKnow-A-Fence Co. provides fence company services in Monroe County. Contact us for full details. Know-A-Fence Co. 99411 Overseas Hwy Key Largo, FL 33037 (833) 336-2387 listing-default Map Loading... No Records Found Sorry, no records were found. Please adjust your search criteria and try again. Maps failed to load Sorry, unable to load the Maps API. Â