Sanitary Hatch Cover A 4" Sanitary Hatch Cover, Foot operated, quick opening designed primarily for waste disposal of campers and travel trailers at dump stations. The non-recessed design provides straight-through flow to eliminate entrapment of waste material. Made of Ductile Iron with a Bronze Cap. Can be locked to prevent dumping without your authorization.  Select Image for Closer Viewing       The Tower Company, Inc. P.O. Box 1958 Manitowoc, WI 54221-1958 1-800-945-1532 or 1-(920) 682-6091 Fax: 1(920) 682-6094